[SOLVED] PBS - Error: no password input mechanism available (500)

[yaya]

PVE version: 9.1.5
PBS version: 4.1.2

SOLVED: Key problem...

Hello,
For context, I just did a complete reinstallation of my PVE due to a change of servers and disks.
When trying to restore my VMs via PBS with the PVE WebUI, I get the following error:
proxmox-backup-client failed: Error: no password input mechanism available (500)
What I tried:

• Check the encryption key: Done, If I try to change it, I get a key error.
• Check the password: Done, If I put something random, I get a 401 error.

If you need any further information, please don't hesitate to ask!

Thank you.