File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/gui/qt/main_window.py", line 616, in <lambda>
    tools_menu.addAction(_("&Network"), lambda: self.gui_object.show_network_dialog(self))
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/gui/qt/__init__.py", line 197, in show_network_dialog
    self.network_updated_signal_obj)
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/gui/qt/network_dialog.py", line 54, in __init__
    self.nlayout = NetworkChoiceLayout(network, config)
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/gui/qt/network_dialog.py", line 335, in __init__
    self.update()
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/gui/qt/network_dialog.py", line 379, in update
    name = chain.get_name()
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/blockchain.py", line 235, in get_name
    return self.get_hash(self.get_max_forkpoint()).lstrip('0')[0:10]
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/blockchain.py", line 487, in get_hash
    header = self.read_header(height)
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/blockchain.py", line 186, in func_wrapper
    return func(self, *args, **kwargs)
  File "/tmp/.mount_electrIwnFVq/usr/lib/python3.6/site-packages/electrum/blockchain.py", line 462, in read_header
    raise Exception('Expected to read a full header. This was only {} bytes'.format(len(h)))