Migration of the site '*******' was skipped. Group sites must exist on target before migration. (4256895)

Migrating SharePoint site with the SharePoint UI dashboard in On Demand Migration (ODM) and we get this error:
"Migration of the site '*******' was skipped. Group sites must exist on target before migration." or "This site is a Group site. Migration of a Group sites is not supported if the corresponding Group site does not exist already on the target O365 tenancy. Please create the Group site on the target first then retry migrating this site"