Migration process fails with the following error in Plesk:
PLESK_ERROR: Failed to connect to target Plesk server by Plesk API: <urlopen error [Errno 111] Connection refused>
Plesk ports are changed from default ports (8443, 8880) to a custom ports in the file
listen 8234 ssl;
Migration manager does not work with custom Plesk ports.
2. Edit the file
/etc/sw-cp-server/conf.d/plesk.conf and change ports back to default values (8443, 8880) and restart the migration..