Brain state: Deep Sleeping Errors

[Roozeboom007]

I'm using one of the latest versions of xDrip, but it loses connection every now and then. Restart the phone, then i am connection again.
De error is "Brain state: Deep Sleeping Errors"
I have a OnePlus 7T with Android version 11, Sensor transmitter is 8S....
What's the problem here?

The settings used are according to this:
https://navid200.github.io/xDrip/docs/Dexcom_page.html

[Navid200]

Have you disabled xDrip and Bluetooth battery optimization?

[Roozeboom007]

I have both set to don't optimize