File "site-packages\electrum-3.2.0-py3.5.egg\electrum\util.py", line 856, in run_with_except_hook
  File "site-packages\electrum-3.2.0-py3.5.egg\electrum\network.py", line 1036, in run
  File "site-packages\electrum-3.2.0-py3.5.egg\electrum\network.py", line 1018, in wait_on_sockets
  File "site-packages\electrum-3.2.0-py3.5.egg\electrum\network.py", line 685, in process_responses
  File "site-packages\electrum-3.2.0-py3.5.egg\electrum\network.py", line 594, in process_response
  File "site-packages\electrum-3.2.0-py3.5.egg\electrum\network.py", line 1063, in on_notify_header
  File "site-packages\electrum-3.2.0-py3.5.egg\electrum\blockchain.py", line 260, in save_header
  File "site-packages\electrum-3.2.0-py3.5.egg\electrum\blockchain.py", line 252, in write