```
$ ./run_electrum sadasdasddsa
Traceback (most recent call last):
File "/home/user/wspace/electrum/./run_electrum", line 532, in <module>
main()
File "/home/user/wspace/electrum/./run_electrum", line 398, in main
if uri and not PaymentIdentifier(None, uri).is_valid():
File "/home/user/wspace/electrum/electrum/payment_identifier.py", line 136, in __init__
self.parse(text)
File "/home/user/wspace/electrum/electrum/payment_identifier.py", line 265, in parse
elif contact := self.contacts.by_name(text):
AttributeError: 'NoneType' object has no attribute 'by_name'
```
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