I have been using VSCode on Cygwin under Windows 11 with no problems, but something suddenly changed so that I no longer see indicators in the gutter about which lines have been modified or deleted since the most recent Git commit. I fear that I may have accidentally invoked some keystroke that disabled them, but I can't figure out what that might be or how to make Git support work properly again.

I have also noticed numerous instances of the following message in the 'Output' window:

Error: spawn C:\cygwin64\bin\git.exe ENOENT

However, I can see that this file exists and is executable. I don't know whether these messages are related to my Git problems or whether they also appeared before the Git problems began.

Any advice on how to get Git support working properly again?