Every trap, with the date it was last checked.
Paste an error message to find the trap behind it, or filter by tool.
514 traps
- fg-0349n8nVerified Oct 2026n8n says 'Credentials could not be decrypted' after a restore, upgrade or new container
Credentials could not be decrypted. The likely reason is that a different 'encryptionKey' was used to encrypt the data.
verified 2026-10-15 · 0 confirmations
- fg-0348n8nVerified Oct 2026n8n Read/Write Files node fails with 'Access to the file is not allowed' after upgrading to 2.0
Access to the file is not allowed. Allowed paths: /home/node/.n8n-files
verified 2026-10-15 · 0 confirmations
- fg-0347n8nVerified Oct 2026n8n Python Code node fails after 2.0 because _input and dot access no longer work
Python code that reads _input fails after the upgrade
verified 2026-10-15 · 0 confirmations
- fg-0346n8nVerified Oct 2026n8n parent workflow receives the sub-workflow input instead of its result when the child has a Wait node
Execute Workflow node output equals the data passed in
verified 2026-10-15 · 0 confirmations
- fg-0345n8nVerified Oct 2026n8n expression errors with 'Multiple matching items for expression' after an Aggregate or Merge
ERROR: Multiple matching items for expression
verified 2026-10-15 · 0 confirmations
- fg-0344n8nVerified Oct 2026n8n executions older than 14 days vanish and the SQLite file never shrinks
Executions list stops at two weeks back
verified 2026-10-15 · 0 confirmations
- fg-0343n8nVerified Oct 2026n8n Code node throws 'Cannot find module' for an npm package installed in the n8n image
Cannot find module 'word-extractor' with a require stack under @n8n/task-runner
verified 2026-10-15 · 0 confirmations
- fg-0342n8nVerified Oct 2026n8n binary files go missing between nodes in queue mode or after upgrading to 2.0
A worker cannot read a binary file written by another process in queue mode
verified 2026-10-15 · 0 confirmations
- fg-0341n8nVerified Oct 2026n8n AI node fails with UND_ERR_HEADERS_TIMEOUT when a local model takes over five minutes
{ "name": "HeadersTimeoutError", "code": "UND_ERR_HEADERS_TIMEOUT" }
verified 2026-10-15 · 0 confirmations
- fg-0340n8nVerified Oct 2026Execute Command node disappears from n8n and old workflows fail to load it after 2.0
Execute Command node missing from the nodes panel
verified 2026-10-15 · 0 confirmations
- fg-0339n8nVerified Oct 2026$env in an n8n Code node or expression returns 'access to env vars denied' after 2.0
[ERROR: access to env vars denied]
verified 2026-10-15 · 0 confirmations
- fg-0338n8nVerified Oct 2026Edits to an n8n workflow are saved but the production webhook still runs the old version
Production executions show the previous node settings
verified 2026-10-15 · 0 confirmations
- fg-0337ShopifyVerified Oct 2026webhookSubscriptions query returns nothing although webhooks from shopify.app.toml are being delivered
webhookSubscriptions returns an empty list for topics that clearly fire
verified 2026-10-15 · 0 confirmations
- fg-0336ShopifyVerified Oct 2026Shopify webhooks silently stop arriving after the endpoint was slow or down for a few hours
webhookSubscriptions no longer lists a topic your app created at install
verified 2026-10-15 · 0 confirmations
- fg-0335ShopifyVerified Oct 2026Shopify webhook HMAC check always fails because the framework parsed the JSON body first
Computed digest never matches X-Shopify-Hmac-SHA256
verified 2026-10-15 · 0 confirmations
- fg-0334ShopifyVerified Oct 2026Shopify responses change shape without a deploy because the pinned API version was retired and Shopify fell forward
X-Shopify-API-Version response header shows a newer version than the one in the request URL
verified 2026-10-15 · 0 confirmations
- fg-0333ShopifyVerified Oct 2026Shopify offline access token stops working after an hour, or on January 1 2027 if it never expires
[API] Invalid API key or access token about an hour after install
verified 2026-10-15 · 0 confirmations
- fg-0332ShopifyVerified Oct 2026Shopify GraphQL throttling and access errors arrive with HTTP 200, so res.ok checks treat them as success
HTTP 200 with errors[0].extensions.code THROTTLED and data null
verified 2026-10-15 · 0 confirmations
- fg-0331ShopifyVerified Oct 2026productCreate makes only one default variant, so multi-variant products need a second mutation
Created product shows a single Default Title variant
verified 2026-10-15 · 0 confirmations
- fg-0330ShopifyVerified Oct 2026New public Shopify app built on the REST Admin API is blocked from the App Store
A new public app built on REST Admin calls cannot pass App Store submission
verified 2026-10-15 · 0 confirmations
- fg-0329ShopifyVerified Oct 2026GraphQL Admin query fails with MAX_COST_EXCEEDED even though it returns only a few records
Query cost is 2003, which exceeds the single query max cost limit (1000).
verified 2026-10-15 · 0 confirmations
- fg-0328ShopifyVerified Oct 2026Customer email, phone or address comes back null with 'This app is not approved to access the Customer object'
This app is not approved to access the Customer object.
verified 2026-10-15 · 0 confirmations
- fg-0327ShopifyVerified Oct 2026Custom session token verification fails with 'jwt not active' or 'jwt expired' in an embedded Shopify app
InvalidJwtError: Failed to parse session token
verified 2026-10-15 · 0 confirmations
- fg-0326ShopifyVerified Oct 2026bulkOperationRunQuery fails because another bulk operation is already running for the shop
A bulk query operation for this app and shop is already in progress
verified 2026-10-15 · 0 confirmations