Human-readable error description
OptionallocationsSource locations in the query document that triggered the error.
Each entry has a line and column number (1-indexed).
Line number (1-indexed).
Column number (1-indexed).
OptionalpathPath to the field that caused the error (field names / array indices)
OptionalextensionsServer-defined extension data (error code, stack trace, etc.)
A single error returned in a GraphQL response
errorsarray (spec §6.4).