After coming back from standby, you get exactly two errors:
2024-10-01 16:04:24.150 T:1564 error <general>: SETTINGS: dbus_error_handler # DBusError('net.connman.Error.Failed -- Input/output error')
2024-10-01 16:04:38.421 T:1193 debug <general>: CServiceAddonManager: stopping service.upnext.
2024-10-01 16:04:38.421 T:1193 debug <general>: CPythonInvoker(9, /storage/.kodi/addons/service.upnext/resources/lib/service_entry.py): trigger Monitor abort request
2024-10-01 16:04:38.421 T:1228 debug <general>: Thread LanguageInvoker 140601852946112 terminating
2024-10-01 16:04:38.421 T:1230 debug <CAddonSettings[[email protected]]>: trying to load setting definitions from old format...
2024-10-01 16:04:38.421 T:1230 debug <general>: [service.upnext] UpNextMonitor -> Service stopped
2024-10-01 16:04:38.421 T:1230 debug <general>: CPythonInvoker(9, /storage/.kodi/addons/service.upnext/resources/lib/service_entry.py): script successfully run
2024-10-01 16:04:38.421 T:1230 debug <general>: onExecutionDone(9, /storage/.kodi/addons/service.upnext/resources/lib/service_entry.py)
2024-10-01 16:04:38.422 T:1230 error <general>: EXCEPTION: No valid addon id could be obtained. None was passed and the script wasn't executed in a normal Kodi manner.
You can uninstall or deactivate the "Up Next" add-on to rule out the latter error as the cause of the issue.
I guess the first error is the culprit. I think your network adapter has a standby mode, which isn't fully supported by the Linux kernel. If you want to invest the time, dig deeper, and find network adapter specs, as well as current Linux driver state.
My suggestion is not to use standby mode at your current hardware. Maybe a screensaver is good enough.