Bitbox02 PaytoMany - Bitbox02Exception: error code: 101, Invalid Input

Version:Version 4.1.5
Type: Linux, AppImage, Ubuntu
Method: Pay to Many

Description:

Using electrum together with bitbox02 as HW wallet. Trying to sign transaction of method "Pay to many". After "Finalize", there is
a window with a sign button. Pressing the sign button ends in the error message below. As a result "pay to many" seems not possible with electrum wallet and bitbox02.

Error Message at Terminal:

bitbox02.communication.bitbox_api_protocol.Bitbox02Exception: error code: 101, message: invalid input
E | plugins.bitbox02.bitbox02.BitBox02_KeyStore | 
Traceback (most recent call last):
  File "/tmp/.mount_electrMQ24Kn/usr/lib/python3.7/site-packages/electrum/plugins/bitbox02/bitbox02.py", line 602, in sign_transaction
    client.sign_transaction(self, tx, self.handler.get_wallet())
  File "/tmp/.mount_electrMQ24Kn/usr/lib/python3.7/site-packages/electrum/plugin.py", line 362, in wrapper
    return run_in_hwd_thread(partial(func, *args, **kwargs))
  File "/tmp/.mount_electrMQ24Kn/usr/lib/python3.7/site-packages/electrum/plugin.py", line 352, in run_in_hwd_thread
    return func()
  File "/tmp/.mount_electrMQ24Kn/usr/lib/python3.7/site-packages/electrum/plugins/bitbox02/bitbox02.py", line 518, in sign_transaction
    version=tx.version,
  File "/tmp/.mount_electrMQ24Kn/usr/lib/python3.7/site-packages/bitbox02/bitbox02/bitbox02.py", line 541, in btc_sign
    request, expected_response="btc_sign_next"
  File "/tmp/.mount_electrMQ24Kn/usr/lib/python3.7/site-packages/bitbox02/communication/bitbox_api_protocol.py", line 639, in _msg_query
    raise Bitbox02Exception(response.error.code, response.error.message)
bitbox02.communication.bitbox_api_protocol.Bitbox02Exception: error code: 101, message: invalid input

Thank yo

Reproduce the Pay to Many signing failure with BitBox02, then start at electrum/plugins/bitbox02/bitbox02.py, especially sign_transaction and the btc_sign call shown in the traceback. Trace the transaction data sent to the BitBox02 protocol and verify that a finalized Pay to Many transaction can be signed without the invalid-input error.