Migration using SSH key cannot be initialized with the error in Plesk > Tools & Settings > Migration and Transfer Manager:
Failed to check SSH connection to the source server 'source' (203.0.113.2): q must be exactly 160, 224, or 256 bits long
SSH keys required for the migration are not installed properly.
Apply one of two possible solutions:
- Re-generate SSH keys.
To re-generate SSH keys:
- Change the authorization method from SSH keys to User / password for migration.