Hey Jon,
It sounds like the Docker Machine may’ve ran out of storage. Pressmatic and early versions of Local have a 20GB cap on the Docker Machine disk. Ever since 2.0 it was raised to 120GB but it didn’t retroactively change the cap due to technical hurdles.
I would try SSHing in before like you did above and then run df -T to check the storage.
If it’s out of space, you can try this: Unable to connect to database on any site previously working working without issue