S. J. Lewis 365 Solutions

SPFx Debugging: Cannot GET /temp/workbench.html

When attempting to debug a recently copied SPFx solution I kept seeing the following error displayed by my browser:

Cannot GET /temp/workbench.html

As per usual, I had entered the following command into the VSCode Terminal window:

gulp serve --nobrowser

Selected the Local workbench profile and clicked on Start Debugging, which attempted to opened the following URL with Google Chrome:

https://localhost:4321/temp/workbench.html

The solution to stop this “Cannot GET” error was to enter the following URL:

https://localhost:5432/workbench

This appears to reset the “service, cache or something” causing the error to go away.

Now I can debug as per normal again.

November 28, 2020

Siôn Lewis

Cheat Sheet, Code, Development, SPFx Framework, Visual Studio Code, VS Code, Workaround

debugging, workbench, workbench.html

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SPFx Debugging: Cannot GET /temp/workbench.html

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