Installing failed on 10.1

BTW, this could be somehow connected to a symfony upgrade (6.3.1 -> 6.3.2) that I triggered at the same time when executing "composer upgrade".

Here's the error that appears after I remove the metatag module from modules/contrib

The website encountered an unexpected error. Please try again later.
Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException: Circular reference detected for service "serializer", path: "jsonapi.resource_response.subscriber -> jsonapi.serializer -> serializer -> serialization.exception.default". in Drupal\Component\DependencyInjection\Container->get() (line 147 of core/lib/Drupal/Component/DependencyInjection/Container.php).
Drupal\Component\DependencyInjection\Container->get() (Line: 440)
Drupal\Component\DependencyInjection\Container->resolveServicesAndParameters() (Line: 237)
Drupal\Component\DependencyInjection\Container->createService() (Line: 177)
Drupal\Component\DependencyInjection\Container->get() (Line: 105)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 224)
Symfony\Component\HttpKernel\HttpKernel->handleThrowable() (Line: 89)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 704)
Drupal\Core\DrupalKernel->handle() (Line: 19)

Did you have 8.x-1.26 (or older) installed before upgrading to v2? The MetatagHalNormalizer class was removed in v2. Did you rebuild the site's caches and run the update scripts after upgrading? There were some notes about this in the release notes: https://www.drupal.org/project/metatag/releases/2.0.0 →

Thanks for this note. This is a very helpful pointer!

I don't recall having installed it before. I certainly don't remember using it.

But I do recall a note flying by during the composer require run. It said something about 1.26. I will try to recreate this with a backup.

I went through several iterations with changing the ordering of the software updates. The pointer from #3 helped quite a bit. (Thx.)

If I went through the metatag update first and made sure to clear the cache, it was fine.

If I updated php 8.1.6 to avoid an opcache error and then upgraded metatag, the problem appeared. After noodling around, I think the problem is that the upgrade to 8.1.6 also ended up installing 8.2.8 but I didn't have php8.2-sqlite installed in the system. So then drush started failing because it looked for the sqlite database drivers but it couldn't find them.

sudo apt-get install php8.2-sqlite

I'm going to close this now because it looks like it's only tangentially connected to metatag.

Thanks for your patience and pointers. They were very helpful.

#5 said

I'm going to close this now because it looks like it's only tangentially connected to metatag.

but the issue is still open.

Closing