Traceback (most recent call last):
  File "/Applications/Electrum.app/Contents/MacOS/electrum/plugins/coldcard/qt.py", line 60, in <lambda>
    btn.clicked.connect(lambda unused: self.export_multisig_setup(main_window, wallet))
  File "/Applications/Electrum.app/Contents/MacOS/electrum/plugins/coldcard/qt.py", line 76, in export_multisig_setup
    with open(fileName, "wt") as f:
PermissionError: [Errno 1] Operation not permitted: '/Volumes/electrum-export-for-coldcard.txt'