Transaction problem with Ledger and Metamask


It is not possible to transact with a secure Metamask account with Ledger.

I have this error message when I confirm a transaction on Metamask:
Transaction failed! TransportStatusError Ledger device: UNKNOW_ERROR (0x6804)

Metamask is well connected
RSK network configured, selected and connected
My Ledger key plugged in
RSK app installed and launched
Data Contract allowed
I have RBTC

I tried on two different browsers, same problem.

I do not understand. I cannot make any transactions even between my accounts because I always have the same error. My RBTC are blocked…

If anyone had a solution … Thanks.