Docker WSL2 - failed to solve with frontend dockerfile.v0

I was getting this error when I tried building an image:

: failed to create LLB definition: rpc error: code = Unknown desc = error getting credentials - err: exit status 255, out: ``

Restarting WSL didn’t help, but I found out that disabling the buildkit does fix it.

DOCKER_BUILDKIT=0 docker build ...

See SO answer.