It’s kind mind boggling how often you have to ask the OP to actually post the command they tried to run or the full error message and some of them will actually try to argue that it won’t help. The people that frequent the forums start to get a bit annoyed at having to beg for bread crumbs and they eventually either become toxic or burn out and leave the community.
KeepassXC is bundled with a CLI tool. But it doesn’t have to do anything special for SSH. It’s ultimately just text and there are multiple ways to paste text into an SSH session.