Installing the latest version

Did you try the --with-all-dependencies (-W) as suggested by composer to update the locked dependency?

Yes I did

Did that resolve the problem or does the phpstan problem persist?

It's still there. I scanned a small module I mad and here's the whole output

PHPStan command failed:

/opt/plesk/php/8.1/bin/php /var/www/vhosts/site.com/newsite/vendor/bin/phpstan analyse --memory-limit=-1 --error-format=json --configuration=/var/www/vhosts/site.com/tmp/upgrade_status/deprecation_testing.neon /var/www/vhosts/site.com/newsite/web/modules/custom/amazonlink
Command output:

Empty.
Command error:

PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedPropertyNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedPropertyNode.php on line 71 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedPropertyNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedPropertyNode.php on line 71 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedInterfaceNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedInterfaceNode.php on line 56 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedInterfaceNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedInterfaceNode.php on line 56 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedPhpDocNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedPhpDocNode.php on line 37 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedPhpDocNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedPhpDocNode.php on line 37 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedFunctionNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedFunctionNode.php on line 73 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedFunctionNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedFunctionNode.php on line 73 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedClassNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedClassNode.php on line 85 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedClassNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedClassNode.php on line 85 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedTraitUseAdaptation::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedTraitUseAdaptation.php on line 75 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedTraitUseAdaptation::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedTraitUseAdaptation.php on line 75 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedParameterNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedParameterNode.php on line 46 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedParameterNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedParameterNode.php on line 46 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedMethodNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedMethodNode.php on line 93 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedMethodNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedMethodNode.php on line 93 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedTraitNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedTraitNode.php on line 39 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedTraitNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedTraitNode.php on line 39 PHP Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedClassConstantNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedClassConstantNode.php on line 68 Deprecated: Return type of PHPStan\Dependency\ExportedNode\ExportedClassConstantNode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Dependency/ExportedNode/ExportedClassConstantNode.php on line 68 PHP Deprecated: Return type of PHPStan\Analyser\Error::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Analyser/Error.php on line 137 Deprecated: Return type of PHPStan\Analyser\Error::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/src/Analyser/Error.php on line 137 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Console\Helper\HelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/console/Helper/HelperSet.php on line 92 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Console\Helper\HelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/console/Helper/HelperSet.php on line 92 PHP Deprecated: Return type of Hoa\Protocol\Node\Node::offsetExists($name) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 134 Deprecated: Return type of Hoa\Protocol\Node\Node::offsetExists($name) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 134 PHP Deprecated: Return type of Hoa\Protocol\Node\Node::offsetGet($name) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 121 Deprecated: Return type of Hoa\Protocol\Node\Node::offsetGet($name) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 121 PHP Deprecated: Return type of Hoa\Protocol\Node\Node::offsetSet($name, $node) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 100 Deprecated: Return type of Hoa\Protocol\Node\Node::offsetSet($name, $node) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 100 PHP Deprecated: Return type of Hoa\Protocol\Node\Node::offsetUnset($name) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 144 Deprecated: Return type of Hoa\Protocol\Node\Node::offsetUnset($name) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 144 PHP Deprecated: Return type of Hoa\Protocol\Node\Node::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 301 Deprecated: Return type of Hoa\Protocol\Node\Node::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/hoa/protocol/Node/Node.php on line 301 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Finder::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Finder.php on line 556 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Finder::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Finder.php on line 556 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Finder::count() should either be compatible with Countable::count(). Deprecated int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Finder.php on line 618 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Finder::count() should either be compatible with Countable::count(). Deprecated int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Finder.php on line 618 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\FileTypeFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/FileTypeFilterIterator.php on line 37 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\FileTypeFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/FileTypeFilterIterator.php on line 37 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator::getChildren() should either be compatible with RecursiveDirectoryIterator::getChildren(): RecursiveDirectoryIterator, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/RecursiveDirectoryIterator.php on line 74 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator::getChildren() should either be compatible with RecursiveDirectoryIterator::getChildren(): RecursiveDirectoryIterator, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/RecursiveDirectoryIterator.php on line 74 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator::rewind() should either be compatible with FilesystemIterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/RecursiveDirectoryIterator.php on line 98 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator::rewind() should either be compatible with FilesystemIterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/RecursiveDirectoryIterator.php on line 98 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator::current() should either be compatible with FilesystemIterator::current(): SplFileInfo|FilesystemIterator|string, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/RecursiveDirectoryIterator.php on line 54 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator::current() should either be compatible with FilesystemIterator::current(): SplFileInfo|FilesystemIterator|string, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/RecursiveDirectoryIterator.php on line 54 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\ExcludeDirectoryFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/ExcludeDirectoryFilterIterator.php on line 51 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\ExcludeDirectoryFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/ExcludeDirectoryFilterIterator.php on line 51 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\ExcludeDirectoryFilterIterator::hasChildren() should either be compatible with RecursiveIterator::hasChildren(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/ExcludeDirectoryFilterIterator.php on line 66 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\ExcludeDirectoryFilterIterator::hasChildren() should either be compatible with RecursiveIterator::hasChildren(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/ExcludeDirectoryFilterIterator.php on line 66 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\ExcludeDirectoryFilterIterator::getChildren() should either be compatible with RecursiveIterator::getChildren(): ?RecursiveIterator, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/ExcludeDirectoryFilterIterator.php on line 70 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\ExcludeDirectoryFilterIterator::getChildren() should either be compatible with RecursiveIterator::getChildren(): ?RecursiveIterator, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/ExcludeDirectoryFilterIterator.php on line 70 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\FilenameFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/FilenameFilterIterator.php on line 26 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\FilenameFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/FilenameFilterIterator.php on line 26 PHP Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\PathFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/PathFilterIterator.php on line 26 Deprecated: Return type of _PHPStan_76800bfb5\Symfony\Component\Finder\Iterator\PathFilterIterator::accept() should either be compatible with FilterIterator::accept(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///var/www/vhosts/site.com/newsite/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/finder/Iterator/PathFilterIterator.php on line 26 Error thrown in /var/www/vhosts/site.com/newsite/vendor/mglaman/phpstan-drupal/src/Drupal/DrupalAutoloader.php on line 190 while loading bootstrap file /var/www/vhosts/site.com/newsite/vendor/mglaman/phpstan-drupal/drupal-autoloader.php: Cannot unset string offsets

Which versions of phpstan and phpstan-drupal did you end up with that still produces this error? Thanks!

I can't seem to find how to check the version. I thought it was just phpstan -V. All I get is a lot of errors.

Just ran updates for everything again, and once again tried to install v3.18

composer require 'drupal/upgrade_status:^3.18' --with-all-dependencies

  Problem 1
    - mglaman/phpstan-drupal[1.0.0, ..., 1.1.16] require phpstan/phpstan ^1.0 -> found phpstan/phpstan[1.0.0, ..., 1.10.x-dev] but these were not loaded, likely because it conflicts with another require.
    - mglaman/phpstan-drupal[1.1.17, ..., 1.1.20] require phpstan/phpstan ^1.7.0 -> found phpstan/phpstan[1.7.0, ..., 1.10.x-dev] but these were not loaded, likely because it conflicts with another require.
    - mglaman/phpstan-drupal[1.1.21, ..., 1.1.25] require phpstan/phpstan ^1.6.0 -> found phpstan/phpstan[1.6.0, ..., 1.10.x-dev] but these were not loaded, likely because it conflicts with another require.
    - mglaman/phpstan-drupal[1.0.x-dev, ..., 1.1.29] require phpstan/phpstan ^1.9.0 -> found phpstan/phpstan[1.9.0, ..., 1.10.x-dev] but these were not loaded, likely because it conflicts with another require.
    - drupal/upgrade_status[3.18.0, ..., 3.x-dev] require mglaman/phpstan-drupal ^1.0.0 -> satisfiable by mglaman/phpstan-drupal[1.0.0, ..., 1.1.29].
    - Root composer.json requires drupal/upgrade_status ^3.18 -> satisfiable by drupal/upgrade_status[3.18.0, 3.x-dev].

Either remove phpstan/phpstan from your composer.json (because its going to be required by this project), or if you're using PHPStan in your project then require any version 1. As in change "^0.12.60" -> "^1"

I'm not trying to sound ignorant, but phpstan/phpstan is not in my site's composer.json. I found it in my composer.lock though:

            "require-dev": {
                "composer/composer": "1.6.* || ^2.0",
                "composer/semver": "^1 || ^3",
                "phpstan/phpstan": "^0.12.55",
                "phpstan/phpstan-phpunit": "^0.12.16",
                "symfony/phpunit-bridge": "^4.2 || ^5",
                "symfony/process": "^2.3"
            },

Yeah I read 8 as root json file.

Something seems to be keeping phpstan on a v0 release though? Your lock file entry for phpstan is a v0?

If this is true, my only further suggestion is a composer why-not phpstan/phpstan 1.9.17 to see whats holding you back.

Okay I tried the suggestion and here is what got barfed out:

$ composer why-not phpstan/phpstan 1.9.17
Info from https://repo.packagist.org: #StandWithUkraine
mglaman/phpstan-drupal            0.12.15 requires phpstan/phpstan (^0.12.65)
phpstan/phpstan-deprecation-rules 0.12.6  requires phpstan/phpstan (^0.12.60)
rector/rector                     0.11.60 requires phpstan/phpstan (0.12.99)
Not finding what you were looking for? Try calling `composer update "phpstan/phpstan:1.9.17" --dry-run` to get another view on the problem.

$ composer update phpstan/phpstan:1.9.17 --dry-run
Loading composer repositories with package information                                                                                   Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - mglaman/phpstan-drupal 0.12.15 requires phpstan/phpstan ^0.12.65 -> found phpstan/phpstan[0.12.65, ..., 0.12.x-dev] but it conflicts with your temporary update constraint (phpstan/phpstan:1.9.17).
    - drupal/upgrade_status 3.11.0 requires mglaman/phpstan-drupal ^0.12.12 -> satisfiable by mglaman/phpstan-drupal[0.12.15].
    - drupal/upgrade_status is locked to version 3.11.0 and an update of this package was not requested.

I had a similar situation. In my case rector/rector was holding phpstan back "rector/rector 0.11.60 requires phpstan/phpstan (0.12.99)". Rector was required by dev palantirnet/drupal-rector. composer remove --dev palantirnet/drupal-rector removed old dependencies and allowed composer require drupal/upgrade_status -W to succeed.

Thank you jonathan_hunt! #13 did the trick.

composer remove --dev palantirnet/drupal-rector
 
composer require drupal/upgrade_status -W

It upgraded to the latest version, and now scans with no errors.