Actually the link worked, I could see the error messages there and it shows that LibNotification was not loaded as the error happened!
So it's caused by something else.
You can try to disable all addons and see if the error occurs without them too.
And if not then your enabled addons (you can see them here:
https://sir.insidi.at/or/logviewer/anBqQI
Click on (1), then (2) and then see at (3)
)
were the cause. Disable them 1 after another to see when the error is gone.