[ContentMigration] foreman-maintain content prepare failed

[sasskinn12]

Thanks a lot. This workaround helped me out!
Now i got next error, same as them here:

[ContentMigration] migration fails with error "Katello::Errors::Pulp3Error: 'NoneType' object has no attribute 'cast'"

Problem: content migration fails with error “Katello::Errors::Pulp3Error: ‘NoneType’ object has no attribute ‘cast’” Expected outcome: pulp2 content migrated to pulp3 (yum) Foreman and Proxy versions: foreman 2.3.1 katello 3.18 Other relevant data: foreman-maintain content switchover gives: Running Switch support for certain content from Pulp 2 to Pulp 3 Switch support for certain content from Pulp 2 to Pulp 3: Performing final content migration before switching content [FAIL] …