( ! ) Deprecated: Return type of Symfony\Component\Serializer\Tests\Fixtures\TraversableDummy::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /work/home/ntrugeon/www/bacasable/vendor/symfony/serializer/Tests/Fixtures/TraversableDummy.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0010	362144	{main}( )	.../TraversableDummy.php:0