Can't proceed with server to cloud migration - "We couldn't import Custom Field Config Scheme..."

[tomasz.zylka]

Hi, Our migration failed several times with following error logs:

2021-06-21 11:43:12.941 ERROR PTL project-import We couldn't import Custom Field Config Scheme 'n'. Reason: NullPointerException: No message. This caused 1 other items to fail.
2021-06-21 11:43:34.601 ERROR PTL project-import We couldn't import Custom Field Default Value 'NDT configuration scheme'. Reason: IllegalArgumentException: Expect one config for custom field config scheme 18405.
2021-06-21 11:43:32.387 ERROR PTL project-import We couldn't import Project PTL. Reason: IllegalArgumentException: Workflow scheme [14690] does not exist. This caused 4722 other items to fail.

we can't understand these logs, what is the issue in here? How to fix it? We tried to analyze it, find that 'NDT configuration scheme', etc., but there is no scheme with that name.

Dear Community, please advise how to deal with that issue?

[Jack Brickey]

@tomasz.zylka , did you ever get this working? If so can you share your findings?