TeamStore migration Part 3 (#15397)

* Migration completed

* TODO

migrations/advanced_permissions_phase_2.go

@@ -72,7 +72,7 @@ func (worker *Worker) runAdvancedPermissionsPhase2Migration(lastDone string) (bo
 	if progress.CurrentTable == "TeamMembers" {
 		// Run a TeamMembers migration batch.
 		if result, err := worker.srv.Store.Team().MigrateTeamMembers(progress.LastTeamId, progress.LastUserId); err != nil {
-			return false, progress.ToJson(), err
+			return false, progress.ToJson(), model.NewAppError("MigrationsWorker.runAdvancedPermissionsPhase2Migration", "app.team.migrate_team_members.update.app_error", nil, err.Error(), http.StatusInternalServerError)
 		} else {
 			if result == nil {
 				// We haven't progressed. That means that we've reached the end of this stage of the migration, and should now advance to the next stage.