#121 - scope: ajax_initiate_migration error

[frontenddevguy]

Old version stopped working and I am trying out this fork.
Trying to push from local to live server (nginx). SSL is enabled.
Could it be misconfiguration of local SSL?
So weird that there isn't a foolproof solution to one of the most important actions on the most popular website platform.

The connection failed, an unexpected error occurred, please contact support. (wp-sync-db#121 - scope: ajax_initiate_migration)

[frontenddevguy]

Adding respective local and live IP addresses to Wordfence white list and then resetting the key also did not work, with and without SSL enabled.