Traceback (most recent call last):
  File "electrum\gui\qt\main_window.py", line 130, in onPress
  File "electrum\gui\qt\__init__.py", line 298, in show_network_dialog
  File "electrum\gui\qt\network_dialog.py", line 63, in __init__
  File "electrum\gui\qt\network_dialog.py", line 321, in __init__
  File "electrum\gui\qt\network_dialog.py", line 358, in update
  File "electrum\blockchain.py", line 246, in get_name
  File "electrum\blockchain.py", line 513, in get_hash
  File "electrum\util.py", line 1340, in func_wrapper
  File "electrum\blockchain.py", line 474, in read_header
Exception: Expected to read a full header. This was only 0 bytes