Traceback (most recent call last):
  File "electrum\gui\qt\network_dialog.py", line 410, in set_server
  File "electrum\network.py", line 385, in run_from_another_thread
  File "concurrent\futures\_base.py", line 446, in result
  File "concurrent\futures\_base.py", line 391, in __get_result
  File "electrum\util.py", line 1311, in wrapper
  File "electrum\network.py", line 656, in set_parameters
  File "electrum\network.py", line 676, in switch_lagging_interface
  File "electrum\blockchain.py", line 482, in header_at_tip
  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