Traceback (most recent call last):


 "__main__.py", line 19, in <module>


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpfdfxmx88\build\youtube_dl\__init__.py", line 465, in main


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpfdfxmx88\build\youtube_dl\__init__.py", line 455, in _real_main


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpfdfxmx88\build\youtube_dl\YoutubeDL.py", line 1956, in download


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpfdfxmx88\build\youtube_dl\YoutubeDL.py", line 787, in extract_info


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpfdfxmx88\build\youtube_dl\YoutubeDL.py", line 831, in process_ie_result


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpfdfxmx88\build\youtube_dl\utils.py", line 541, in sanitize_url
AttributeError: 'NoneType' object has no attribute 'startswith'

Traceback (most recent call last):


 "/Users/pravin/Electrum/electrum/gui/qt/network_dialog.py", line 69, in on_update

self.nlayout.update()


 "/Users/pravin/Electrum/electrum/gui/qt/network_dialog.py", line 392, in update

self.nodes_list_widget.update(self.network)


 "/Users/pravin/Electrum/electrum/gui/qt/network_dialog.py", line 116, in update

name = b.get_name()


 "/Users/pravin/Electrum/electrum/blockchain.py", line 248, in get_name

return self.get_hash(self.get_max_forkpoint()).lstrip('0')[0:10]


 "/Users/pravin/Electrum/electrum/blockchain.py", line 518, in get_hash

header = self.read_header(height)


 "/Users/pravin/Electrum/electrum/blockchain.py", line 199, in func_wrapper

return func(self, *args, **kwargs)


 "/Users/pravin/Electrum/electrum/blockchain.py", line 484, in read_header

name = self.path()


 "/Users/pravin/Electrum/electrum/blockchain.py", line 199, in func_wrapper

return func(self, *args, **kwargs)


 "/Users/pravin/Electrum/electrum/blockchain.py", line 352, in path

prev_hash = self._prev_hash.lstrip('0')
AttributeError: 'NoneType' object has no attribute 'lstrip'
