( ! ) Deprecated: Return type of ApiPlatform\Core\Tests\Fixtures\TestBundle\Document\Content::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /work/home/ntrugeon/www/bacasable/vendor/api-platform/core/tests/Fixtures/TestBundle/Document/Content.php on line 151
Call Stack
#	Time	Memory	Function	Location
1	0.0012	376168	{main}( )	.../Content.php:0