Lightroom + Lightroom classic AI Denise will no longer work with my Sony raw files

So, yesterday I used AI Denoise on a photo, worked great. I've been through EVERY existing debug, uninstall reinstall, check for updates, convert from ARW to DNG. Check for compression, nothing. I tried it on THE SAME original photo I used it on yesterday. No go. I'm getting an error that AI denoise isn't compatible with my file type. But it has been, for dozens of photos. Now no. I changed no settings in LR and none in my A6400, they still exported as ARW files as usual. Just super confused. Paid to upgrade to LRC because it was a recommended possible fix. So I've over paid this month and still can't use the feature, HELP