Posting this for Docker Desktop for Mac which runs Docker inside a linux Virtual Machine (VM) so the accepted answer does not work since those storage_driver files are inside that VM and not on the Mac itself.

Here, the approach is to delete that VM and have Docker Desktop for Mac recreate it when it restarts.

The steps for this are...

1. Quit Docker Desktop For Mac

2. Find the proper <vm-number> (e.g. 0 )...

   ls -al ~/Library/Containers/com.docker.docker/Data/vms/
   

3. Move/Backup the VM...

   mv ~/Library/Containers/com.docker.docker/Data/vms/<vm-number>/data/Docker.raw ~/Desktop/Docker.raw.backup
   

4. Restart Docker Desktop For Mac

I created a Gist on this citing this post