Expired sessionID should show an error message instead of silently stopping app updates

[DanNeely]

I'm not 100% certain this was the cause, but while restoring my configuration while troubleshooting I saw my browser login to poe had expired, and after relogging and supplying the new sessionID to the app it resumed working.

[viktorgullmark]

Thanks for posting this. Noticed this myself when testing across different PC's, and this should definitely be a thing. Leaving this open.