File "C:\Program Files (x86)\Electrum\electrum\plugins\coldcard\qt.py", line 47, in <lambda>
    btn.clicked.connect(lambda unused: self.export_psbt(dia))
  File "C:\Program Files (x86)\Electrum\electrum\plugins\coldcard\qt.py", line 68, in export_psbt
    raw_psbt = keystore.build_psbt(tx, wallet=dia.wallet)
  File "C:\Program Files (x86)\Electrum\electrum\plugins\coldcard\coldcard.py", line 472, in build_psbt
    write_kv(PSBT_IN_BIP32_DERIVATION, subkeys[k], k)