GraphQL does not report parsing errors

I see this useless message reported in many situations: `Cannot query field "{some field}" on type "RootQuery".`

There's actual errors underneath that are not being reported. `FieldsOnCorrectTypeRule` is reporting graphql errors but none of these are surfaced to the caller.

`gqlerrors.FormattedError{Message:"Oracle fields must be an object with field names as keys or a function which return such an object."`

While these are server errors and not actionable by the client, they should at least be logged when encountered.