'Random exception from telegram API

Okay so the following: I have a simple bot that's running in this loop:

def teleupdater():
    try:
        updater.start_polling()
    except:
        pass

The problem is, sometimes (and I really mean sometimes, sometimes after 1 week, sometimes after 1 hour and I checked everything. It's not a certain event when the error occurs. It seems very random) I get this error: https://pastebin.com/4iYB4Dqq
I honestly have no clue what this is and it also seems that it doesn't effect the bots performance in any way.



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