Update conversion from ActiveRecord error
Update conversion from ActiveRecord error

ActiveRecord errors attribute are symbols, and by default, the `camelize` method will `PascalCase` unless the `:lower` argument is passed.
nevesenin/graphql-ruby,nevesenin/graphql-ruby,rmosolgo/graphql-ruby,rmosolgo/graphql-ruby,rmosolgo/graphql-ruby,nevesenin/graphql-ruby,nevesenin/graphql-ruby,rmosolgo/graphql-ruby