I have this error when showing any content in the backend of IBEXA (formerly ezpublish) :
Could not find type with alias "RepositoryLanguage". Did you forget to define it?
I tried clearing the cache with php bin/console cache:clear
but it does not work.
It seems that you need to (re)generate your domain schema. with those commands :
php bin/console ibexa:graphql:generate-schema
php bin/console cache:clear
For more information visit the docs on : https://doc.ibexa.co/en/latest/api/graphql/graphql/#setup