"Exception on fd" means the connection with the client has disappeared so we will automatically log off the client. Let me dig a bit on how MS Edge WebView can be the cause of the crash and if it is the culprit, take it up.
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...