I keep the GraphQLite fixed to version 8.0.0 but I didn't have the webonyx/graphql-php sub-dependency fixed to a version. After updating, it got updated from v15.30.2 to v15.31.1 and now GraphQL stopped working and all I receive is Unknown type "String".
I use custom class finder based on https://github.com/nette/robot-loader.
Also reported here: webonyx/graphql-php#1876 (comment)