Hubitat integration failing

Set up the Hubitat HACA integration and everything worked great for 2 days. Now none of the devices are syncing, and I’m getting a version error, see below.

Setup failed for hubitat: Requirements for hubitat not found: [‘hubitatmaker>=0.3.11,<0.4.0’].

My question is, which side is having the error, Hubitat maker API or the HACS code?