Error with SSH integration

Here's the error I can see from the terminal:

sign_and_send_pubkey: signing failed for ED25519 "" from agent: agent refused operation
And here are https://paste.ee/p/vPc0y (btw, why aren't log/txt files allowed?).

The odd thing is that the integration works with git (was able to clone a private repo), but not ssh.

1Password Version: 8.9.4
Extension Version: Not Provided
OS Version: NixOS Unstable
Browser:_ Not Provided