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:
The solution to stop this “Cannot GET” error was to enter the following URL:
This appears to reset the “service, cache or something” causing the error to go away.
Now I can debug as per normal again.