If you look into the asd directory within the jffs directory, you will see a file for chknvram.  Mine is named chknvram20230516.  Which for some reason makes me think it was updated on its own overnight?

I'm having the same issue.  Tried downgrading to firmware from fall 22, no luck.  Tried hard boot, no luck, tried deleting log files, no luck.If you log in with port 22 you can see the asd log file which is in the jffs folder.  Enable ssh in Administ...