Traceback (most recent call last):
  File "electrum\gui\qt\network_dialog.py", line 77, in on_update
  File "electrum\gui\qt\network_dialog.py", line 366, in update
  File "electrum\gui\qt\network_dialog.py", line 153, in update
  File "electrum\blockchain.py", line 244, in get_name
  File "electrum\blockchain.py", line 511, in get_hash
  File "electrum\util.py", line 1150, in func_wrapper
  File "electrum\blockchain.py", line 467, in read_header
  File "electrum\blockchain.py", line 429, in assert_headers_file_available
FileNotFoundError: Electrum headers_dir does not exist. Was it deleted while running?