graphql
Duplicate type definition in schema
Duplicate type.*definition|Type.*already defined
Fixes
- 1.Use extend type Query { } in modular schemas instead of redefining Query
- 2.Check for duplicate type names across schema files
- 3.Use schema merging utilities (merge-graphql-schemas) for modular schemas
graphqlschemaduplicates
Related Errors
graphql3 fixes
GraphQL field not found on type
Cannot query field.*on type
- •Check the schema — the field may be named differently or not exist on that type
- •Run introspection query to verify available fields
graphql3 fixes
GraphQL variable type mismatch
Expected type.*found.*type mismatch|Variable.*got invalid value
- •Ensure variable types match the schema definition (e.g., ID! vs String!)
- •Check that enum values are passed as unquoted strings, not quoted
graphql3 fixes
GraphQL N+1 query problem
N\+1.*detected|dataloader.*batch|too many queries
- •Use DataLoader to batch and cache database calls per request
- •Implement field-level resolvers with DataLoader instances