Unable to start website importing or migration: Failed to connect to the source domain by SSH: Bad authentication type

Symptoms

• The following error is displayed when a website is imported in Domains > example.com > Website Importing:

  

• Migrating from cPanel via Tools & Settings > Migration & Transfer Manager fails with the following error:

  Failed to perform action: Fetch data from source cPanel
  Cause: Failed to connect to the the source server 'cpanel' (203.0.113.2) at '203.0.113.2' by SSH as 'root': ('Bad authentication type', [u'publickey', u'gssapi-keyex', u'gssapi-with-mic']) (allowed_types=[u'publickey', u'gssapi-keyex', u'gssapi-with-mic'])
  That is a critical error, migration was stopped.

Cause

Password authentication is disabled on the source server.

Note: In regards to Website Importing the warning also appears if the SSH access on the source server was configured via SSH key only.

Resolution