File "C:\Program Files (x86)\Electrum\electrum\plugins\cosigner_pool\qt.py", line 221, in on_receive
    xprv = wallet.keystore.get_master_private_key(password)
  File "electrum\keystore.py", line 346, in get_master_private_key
  File "electrum\crypto.py", line 178, in pw_decode
  File "base64.py", line 80, in b64decode
  File "base64.py", line 46, in _bytes_from_decode_data