Time Machine can't connect to the backup disk / OSStatus error 2
I run my TimeMachine backs up wirelessly to my back-up drive attached to my router. Once configured, I've had no problems.
About 24 hours ago I received a pop-up notice from TM that my back-up drive was not formatted in APFS. This has never mattered or been an issue. I closed the notice and instructed TM to run an immediate back-up. The process appeared to start, until the progress bar stopped about 1/2 way and I received another notice that the process could not be completed.
I power cycled my Mac and my back-up drive. The next attempt to reconnect to my back-up drive (which it can see) was met with this message:
"Time Machine can't connect to the backup disk. The operation couldn't be completed. (OSStatus error 2.)"
I'm now stuck at this point. Power cycles. attempts to reset have not changed the outcome. I still receive the "OSS" error message. Doesn't anyone know what's going on?
MacBook Pro