Troubleshooting

Generation failed: (genCfg.get(...) || "").trim is not a function

A non‑string setting (e.g., object/array) is being read as string. Ensure extraPrompt* keys are strings, and perOperationPrompts is an array of objects.

GraphQL 401 Unauthorized: Unable to parse JWT token

You selected COGNITO in tests but the token/env is empty or expired. For IAM flows, use Jest or fetch resolvers via control‑plane APIs (not GraphQL endpoint).

Could not load credentials from any providers

Configure appsyncTestGen.connection.profile and ensure your AWS CLI profile exists, or set env vars before running resolver fetch.

No progress indication

Long‑running tasks show VS Code progress notifications. Resolver fetch logs to “AppSync TestGen” output channel.

Missing type expansion in returnTree

Increase selection/return tree depth settings (or accept truncation). Verify the type exists in the schema.

Scenario gql invalid

The generator validates each scenario.gql against the pruned SDL; if invalid, it auto‑replaces with canonical operation.graphql and annotates notes.

“Waiting for preLaunchTask ‘watch’…”

Ensure npm run watch exists and TypeScript compiles (problem matcher $tsc-watch).

“Generation failed: (genCfg.get(…) || ‘’).trim is not a function”

A string setting was saved as non-string. In Settings (JSON) check:

• extraPrompt, extraPromptQuery/Mutation/Subscription, extraPromptFile Reset to empty strings if needed.

IAM: “Could not load credentials from any providers”

Pick a valid AWS profile/region. Verify:

aws sts get-caller-identity --profile YOUR_PROFILE --region us-east-1