Yes, that photo is of the recovery.log (while booted into recovery) after a failed wireless update attempt.
And yes, my Settings –> About Tablet says I am currently running Android 8.1.0 with Build number U1005_V1.0_20190116.
Here’s another photo of the log that shows the full error message line (including the keys it is expecting to find).

Is there some way to grab the text version of the recovery logs? If this recovery was TWRP, I’d just boot into TWRP recovery and pull the files via adb.