1x: Class "Drupal\subrequests\Normalizer\JsonBlueprintDenormalizer" should implement method "Symfony\Component\Serializer\Normalizer\DenormalizerInterface::getSupportedTypes(?string $format): array".
1x in BlueprintManagerTest::setUp from Drupal\Tests\subrequests\Unit\Blueprint
1x: Class "Drupal\subrequests\Normalizer\MultiresponseNormalizer" should implement method "Symfony\Component\Serializer\Normalizer\NormalizerInterface::getSupportedTypes(?string $format): array".
1x in BlueprintManagerTest::setUp from Drupal\Tests\subrequests\Unit\Blueprint
1x: Class "Drupal\subrequests\Normalizer\JsonSubrequestDenormalizer" should implement method "Symfony\Component\Serializer\Normalizer\DenormalizerInterface::getSupportedTypes(?string $format): array".
1x in JsonSubrequestDenormalizerTest::setUp from Drupal\Tests\subrequests\Normalizer
1x: Class "Drupal\subrequests\Normalizer\MultiresponseJsonNormalizer" should implement method "Symfony\Component\Serializer\Normalizer\NormalizerInterface::getSupportedTypes(?string $format): array".
1x in MultiresponseJsonNormalizerTest::setUp from Drupal\Tests\subrequests\Normalizer
Once you fixed above issue mentioned in the screenshot you will encounter new issues.
Run php unit test at your local with php 8.2 and drupal/core version: 10.0 9
Symfony 3.0 readiness roadmap is required here for this module.
Closed: duplicate
3.0
Code