RangeError: Maximum call stack size exceeded on code node

Questions
1

Describe the problem/error/question

Hi Team,
I am facing an issue with the version 1.108.1 where it shows RangeError: Maximum call stack size exceeded error on a code node.
The code node is building a SOQL request (for Salesforce CRM) based on a list of fields. The node is inside a loop.

We updated n8n version yesterday, it was working fine before that (I don’t remember which version).

What is the error message (if any)?

RangeError: Maximum call stack size exceeded

Please share your workflow

Share the output returned by the last node

RangeError: Maximum call stack size exceeded at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:792:63 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>) at getPairedItem (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:783:49) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-workflow@file+packages+workflow/node_modules/n8n-workflow/dist/cjs/workflow-data-proxy.js:789:61 at Array.flatMap (<anonymous>)

Information on your n8n setup

  • n8n version: 1.108.1
  • Database (default: SQLite): ?? (I’m using n8n cloud)
  • n8n EXECUTIONS_PROCESS setting (default: own, main): ??
  • Running n8n via (Docker, npm, n8n cloud, desktop app): n8n cloud
  • Operating system: Windows
2

A Code node inside a loop starts throwing RangeError: Maximum call stack size exceeded. The recursive stack comes from getPairedItem() inside workflow-data-proxy, repeated over and over (many flatMaps), suggesting a cycle or an overly deep “paired item” chain when propagating items through the loop.

This type of error has appeared before in n8n with Function/DB nodes and large volumes or chaining, and is usually resolved by preventing the node from returning structures with prereferences or by partitioning to avoid creating huge pairing chains.

3

Here is the workflow:

4

The error occur on the “Build Salesforce Select Query and Url” code node, around loop 390 ish

5

Hi Erick,
Thanks for your answer.
What do you think I should in my case to resolve this issue ? (I’ve added the workflow in another comment)

6

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