Traceback (most recent call last):
  File "electrum\gui\qt\confirm_tx_dialog.py", line 195, in on_tab_changed
  File "electrum\gui\qt\confirm_tx_dialog.py", line 206, in update
  File "electrum\gui\qt\confirm_tx_dialog.py", line 1160, in update_tx
  File "electrum\gui\qt\send_tab.py", line 321, in make_tx
  File "electrum\util.py", line 495, in do_profile
  File "electrum\wallet.py", line 2137, in make_unsigned_transaction
  File "electrum\wallet.py", line 210, in get_locktime_for_new_transaction
  File "electrum\blockchain.py", line 500, in is_tip_stale
  File "electrum\blockchain.py", line 496, in header_at_tip
  File "electrum\util.py", line 1242, in func_wrapper
  File "electrum\blockchain.py", line 483, in read_header
  File "electrum\blockchain.py", line 443, in assert_headers_file_available
FileNotFoundError: Electrum headers_dir does not exist. Was it deleted while running?