I'm having the same kind of issue. I can get Immich set up, but when I start uploading photos, after about 100 or so photos Immich starts to do the deploying loop. The status is "running" for like 20 seconds at a time, and then it gois back to "deploying". I did reinstall the immich with your advice, deleting the folders immich created during the first installation, but no luck. I got a bit paranoid that maybe the HDD's arent getting enough power through my Zimaboard, but no, that wasnt the problem as I'm now powering them with a different psu and nothing changed.
Can somebody help me with this?