GHL Nodes Failing

Describe the problem/error/question

The HighLevel node's "Get Contact" operation started throwing an error today across multiple workflows that have run successfully thousands of times before. Contact ID is present and valid, confirmed by testing the same ID and credential via a raw HTTP Request node, which works fine. Also confirmed with a manually entered, hardcoded Contact ID directly in the node (not an expression), same error. So this isn't a data or credential issue, it's isolated to the HighLevel node itself.

What is the error message (if any)?

NodeOperationError: Invalid identifier: a value is required at RoutingNode.runNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file++++home+runner+_work+n8n+n8n+packages+core/node_modules/n8n-core/src/execution-engine/routing-node.ts:278:9) at ExecuteContext.versionedNodeType.execute (/usr/local/lib/node_modules/n8n/src/node-types.ts:109:18) at WorkflowExecute.executeNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file++++home+runner+_work+n8n+n8n+packages+core/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1125:8) at WorkflowExecute.runNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file++++home+runner+_work+n8n+n8n+packages+core/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1427:11) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file++++home+runner+_work+n8n+n8n+packages+core/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:2329:27 at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file++++home+runner+_work+n8n+n8n+packages+core/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:2810:11

Node type: n8n-nodes-base.highLevel Node version: 2 (Latest)

Please share your workflow/screenshots/recording

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)
⚠️ WARNING ⚠️ If you have sensitive data in your workflow (like API keys), please remove it before sharing.

Share the output returned by the last node

Item Index: 0 Run Index: 0 No successful output, error only (see above).

Debug info

core

• n8nVersion: 2.37.7
• platform: docker (cloud)
• nodeJsVersion: 26.5.1
• nodeEnv: production
• database: sqlite
• executionMode: regular
• concurrency: 50
• license: enterprise (sandbox)

storage

• success: all
• error: all
• progress: false
• manual: true
• binaryMode: filesystem

pruning

• enabled: true
• maxAge: 720 hours
• maxCount: 25000 executions

client

• userAgent: mozilla/5.0 (macintosh; intel mac os x 10_15_7) applewebkit/537.36 (khtml, like gecko) chrome/152.0.0.0 safari/537.36
• isTouchDevice: false

Generated at: 2026-09-17T13:05:28.557Z