Traceback (most recent call last):
  File "/private/var/folders/7z/ych_5wwj71v5nlpjtl7zrhjh0000gn/T/AppTranslocation/A8A4CF3E-1C9D-42C1-A452-0BCDB002AFCB/d/Electrum.app/Contents/MacOS/electrum/plugins/cosigner_pool/qt.py", line 239, in on_receive
    xprv = wallet.keystore.get_master_private_key(password)
  File "electrum/keystore.py", line 569, in get_master_private_key
  File "electrum/crypto.py", line 290, in pw_decode
  File "electrum/crypto.py", line 249, in pw_decode_bytes
  File "base64.py", line 80, in b64decode
  File "base64.py", line 46, in _bytes_from_decode_data
TypeError: argument should be a bytes-like object or ASCII string, not 'NoneType'