VSCodium can't find SSH keys

[ThatBlockyPenguin]

Trying to connect to a server using this extension causes this error:

[Info  - 23:53:44.544] Resolving ssh remote authority 'ssh-remote+penguinserver' (attemp #1)
[Trace  - 23:53:44.577] Identity keys:
None
[Info  - 23:53:44.739] Trying no-auth authentication
[Error  - 23:53:44.797] Error resolving authority
Error: All configured authentication methods failed

Whereas if I SSH into it normally (via terminal command), it works like a charm.