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ERR_INSPECTOR_NOT_WORKER

inspector not worker

What does this code mean?

Code ERR_INSPECTOR_NOT_WORKER · An issue reported by Node.js.

Official explanation · Original text

An API was called on the main thread that can only be used from the worker thread.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Errors | Node.js v26.13.1 Documentation ↗

Creator: Node.js contributors; Joyent, Inc. and other Node contributors
License: MIT License (Node.js documentation)
Checked on: 2026-11-12

Modifications: English prose extracted; whitespace normalized; Korean context and classified official links added. Python code examples not redistributed.

Source details · Original licenses and notices