{"record":{"id":"8e1fd8f3fd81df56","repo":"mastra-ai/mastra","slug":"failed-to-resolve-updated-prompt-block","errorCode":null,"errorMessage":"Failed to resolve updated prompt block","messagePattern":"Failed to resolve updated prompt block","errorType":"http","errorClass":"HTTPException","httpStatus":500,"severity":"error","filePath":"packages/server/src/server/handlers/stored-prompt-blocks.ts","lineNumber":309,"sourceCode":"      const providedConfigFields = Object.fromEntries(Object.entries(configFields).filter(([_, v]) => v !== undefined));\n\n      // Handle auto-versioning with retry logic for race conditions\n      // This creates a new version if there are meaningful config changes.\n      // It does NOT update activeVersionId — the version stays as a draft until explicitly published.\n      await handleAutoVersioning(\n        promptBlockStore as unknown as VersionedStoreInterface,\n        storedPromptBlockId,\n        'blockId',\n        PROMPT_BLOCK_SNAPSHOT_CONFIG_FIELDS,\n        existing,\n        updatedPromptBlock,\n        providedConfigFields,\n      );\n\n      // Return the resolved prompt block with the latest (draft) version so the UI sees its edits\n      const resolved = await promptBlockStore.getByIdResolved(storedPromptBlockId, { status: 'draft' });\n      if (!resolved) {\n        throw new HTTPException(500, { message: 'Failed to resolve updated prompt block' });\n      }\n\n      const latestVersion = await promptBlockStore.getLatestVersion(storedPromptBlockId);\n      const hasDraft = !!(\n        latestVersion &&\n        (!resolved.activeVersionId || latestVersion.id !== resolved.activeVersionId)\n      );\n\n      return { ...resolved, hasDraft };\n    } catch (error) {\n      return handleError(error, 'Error updating stored prompt block');\n    }\n  },\n});\n\n/**\n * DELETE /stored/prompt-blocks/:storedPromptBlockId - Delete a stored prompt block\n */","sourceCodeStart":291,"sourceCodeEnd":327,"githubUrl":"https://github.com/mastra-ai/mastra/blob/75dd419e613fe9c39f846ffc500716141b74fda6/packages/server/src/server/handlers/stored-prompt-blocks.ts#L291-L327","documentation":"After a successful update, the handler re-reads the prompt block via getByIdResolved with status 'draft' to return the fully resolved (inherited/merged) configuration. If that read returns null even though the update succeeded, the server throws this 500, signalling an unexpected internal inconsistency rather than a client mistake.","triggerScenarios":"An update request whose follow-up resolved read returns null — typically a race (the record was deleted between update and re-read), or a storage adapter whose getByIdResolved with { status: 'draft' } is buggy/unimplemented and returns null for a valid record.","commonSituations":"Concurrent deletion of the same prompt block while an update is in flight; storage adapter version with an incomplete getByIdResolved/draft-resolution implementation; custom storage implementations that ignore the status option.","solutions":["Retry the request — a transient race usually resolves on the next call.","Confirm the record still exists after the update (GET by id).","Upgrade the storage adapter to a version with a correct getByIdResolved draft-status implementation.","If using a custom store, ensure getByIdResolved honors { status: 'draft' } and returns the resolved record.","File a bug with @mastra/core/server if a fresh, simple update reliably reproduces this."],"exampleFix":null,"handlingStrategy":"retry","validationCode":"const check = await fetch(`/api/stored-prompt-blocks/${id}`).then(r => r.ok);\nif (!check) throw new Error('Prompt block disappeared before update');","typeGuard":"function isResolvedBlock(v: unknown): v is { id: string; activeVersionId?: string | null } {\n  return !!v && typeof v === 'object' && typeof (v as any).id === 'string';\n}","tryCatchPattern":"async function updateWithRetry(id: string, body: unknown, tries = 3) {\n  for (let i = 0; i < tries; i++) {\n    const res = await fetch(`/api/stored-prompt-blocks/${id}`, { method: 'PATCH', body: JSON.stringify(body) });\n    if (res.status === 500) continue; // transient resolution failure\n    if (!res.ok) throw new Error(`Update failed: ${res.status}`);\n    return res.json();\n  }\n  throw new Error('Failed to resolve updated prompt block after retries');\n}","preventionTips":["Avoid concurrent deletes/updates on the same prompt block ID.","Retry once on 500 for update endpoints before surfacing an error.","Keep storage adapters updated (getByIdResolved draft support).","Report reproducible cases to the mastra maintainers."],"tags":["storage","server","internal-error"],"backgroundTag":"storage-read-returned-null","analyzedSha":"75dd419e613fe9c39f846ffc500716141b74fda6","analyzedAt":"2026-08-30T00:15:31.844Z","schemaVersion":2},"datasetVersion":"2026-08-30T03:17:51.788Z"}