Uncheck the errors - I bet if you look at the full log .txt file, or even the BI Camera Status page, you will see a lost signal or something that will trigger the error. See if you have the little yellow triangle in your log anywhere.
Also if any of your KEY drops below 0.20 that will result in an error as well and that will not show up in the log. You would have to actually see the KEY drop below that.
The log looks good. Most of the emails I get are related to motion and general statuses.
Here is a slightly sanitized example of an email I got:
Clips: 24343 items, 735.0G/1.56T; D: +242.8G
12/2/2021 7:03:35 AM loginname: ::ffff:IPAddress: Login (0)
12/2/2021 2:36:18 AM Side: Email: myemail with 2 attachment/s (31)
12/2/2021 2:36:18 AM Side: MOTION_A (31)
12/2/2021 2:36:14 AM Rear: Email: myemail with 2 attachment/s (16)
12/2/2021 2:36:13 AM Rear: MOTION_A (16)
12/2/2021 2:00:15 AM Clips: DBCompact: finished (1)
12/2/2021 App: Today's sunrise: 7:39 AM, sunset: 5:32 PM (0)
12/1/2021 10:44:20 PM Action: Email: myemail with 0 attachment/s (0)