Karma: use Windows' Chrome from WSL
I found that if you create a C:\tmp\karma folder under Windows, this error goes away, and Chrome finds and uses this folder for temp files.
You can also change the temporary folder that Chrome uses for its data by setting the TEMP environment variable like so:
export TEMP='/path/to/your/folder'The important thing is that C:\path\to\your\folder must exist under Windows.