I can't install anything because of this error:
[RuntimeException] Could not scan for classes inside "/app/vendor/symfony/serializer/src/" which does not appear to be a file nor a folder
Could not scan for classes inside "/app/vendor/symfony/yaml/src/" which does not appear to be a file nor a folder
I navigated to that directory and the src folder is indeed missing...
I'm using Lando and switch the PHP to 7.1. I tried deleting the vendor directory and rerunning
lando composer update and
lando composer install but get the same errors.