Here is what I've got after the upgrade:Deprecated: Return type of
should either be compatible with JsonSerializable::jsonSerialize():
mixed, or the #[\ReturnTypeWillChange] attribut...
Thanks for the help! I've already tried clearing cache but didn't dump
autoload files. after deleting the vendor folder and composer.lock file
and run composer update to get everything back, it seems the issue is
still in there.Like you said, it's no...