hasura/graphql-engine · error · InternalDeveloperError

The field '{field_name}' was not found on object type '{obje

Error message

The field '{field_name}' was not found on object type '{object_type_name}'

What it means

Raised when looking up field_name on object type object_type_name fails during IR planning. Unlike 660 this is a pure type-level lookup: the field simply is not a member of that object type's definition.

Source

Thrown at v3/crates/graphql/ir/src/error.rs:205

    #[error("Mapping for the {mapping_kind} typename {type_name:} not found")]
    TypenameMappingNotFound {
        type_name: ast::TypeName,
        mapping_kind: &'static str,
    },

    #[error("Field mapping not found for the field {field_name:} of type {type_name:}")]
    FieldMappingNotFound {
        type_name: Qualified<CustomTypeName>,
        field_name: FieldName,
    },

    #[error("Object type '{type_name}' not found")]
    ObjectTypeNotFound {
        type_name: Qualified<CustomTypeName>,
    },

    #[error("The field '{field_name}' was not found on object type '{object_type_name}'")]
    ObjectTypeFieldNotFound {
        field_name: FieldName,
        object_type_name: Qualified<CustomTypeName>,
    },

    #[error("{0}")]
    RelationshipFieldMappingError(#[from] plan::RelationshipFieldMappingError),

    #[error(
        "Argument mapping not found for the argument {argument_name:} while executing the relationship {relationship_name:}"
    )]
    ArgumentMappingNotFoundForRelationship {
        relationship_name: RelationshipName,
        argument_name: ArgumentName,
    },

    #[error(
        "The aggregation function {aggregation_function} operating over the {aggregate_operand_type} type is missing a data connector mapping for {data_connector_name}"

View on GitHub (pinned to 724551b9ae)

Solutions

1. Correct the field name in the query to one that exists on the object type
2. Regenerate client code / persisted queries after schema changes
3. Validate the query against the current schema before sending it

Example fix

# before
query { users { address { zip } } }  # 'zip' does not exist on Address
# after
query { users { address { postalCode } } }

// Validate query against schema before sending (graphql-js)
import { validate } from 'graphql';
const errs = validate(schema, parse(queryStr));
if (errs.length) throw errs[0];

const fieldOnType = (schema, typeName, fieldName) =>
  !!schema.getType(typeName)?.getFields()?.[fieldName];

// Rely on pre-send validation; treat this error as a stale-client signal and regenerate codegen output

When it happens

Trigger: Selecting a subfield on an object-typed field where the subfield is not defined on that object type; ordering-by or filtering on a nonexistent field of an object type; relationship target field mismatches.

Common situations: Schema changed and clients (persisted queries, codegen output) are stale; typos in field names; union/interface misuse where the field belongs to another type.

Related errors

• validation failed: {0}
• Unexpected value: expecting {expected_kind:}, but found: {fo
• '{name:}' is not a valid GraphQL name.
• '{alias:} is not a valid alias
• {value} is not a valid limit value

AI-assisted analysis of hasura/graphql-engine@724551b9ae (2026-08-28). Data as JSON: /api/errors/5ef9e282d943f134. Report an issue: GitHub.