diff --git a/staffeln/common/openstack.py b/staffeln/common/openstack.py
index efdb060..9f412e8 100644
--- a/staffeln/common/openstack.py
+++ b/staffeln/common/openstack.py
@@ -48,10 +48,16 @@
         members = self.get_role_assignments(project_id)
         emails = []
         for member in members:
-            if member.user and "id" in member.user:
-                user = self.get_user(member.user["id"])
-                if user and hasattr(user, "email"):
-                    emails.append(user.email)
+            if hasattr(member, "user"):
+                user_id = None
+                if type(member.user) is dict and "id" in member.user:
+                    user_id = member.user["id"]
+                elif type(member.user) is str:
+                    user_id = member.user
+                if user_id:
+                    user = self.get_user(user_id)
+                    if user and hasattr(user, "email") and user.email:
+                        emails.append(user.email)
         return emails
 
     def get_projects(self):
diff --git a/staffeln/conductor/result.py b/staffeln/conductor/result.py
index 2bb0f57..34d9660 100644
--- a/staffeln/conductor/result.py
+++ b/staffeln/conductor/result.py
@@ -48,7 +48,7 @@
                     return False
             except Exception as ex:
                 LOG.warn(
-                    f"Failed to fetch emails from project members with exception: {ex}"
+                    f"Failed to fetch emails from project members with exception: {str(ex)} "
                     "As also no receiver email or project receiver domain are "
                     "configured. Will try to report later."
                 )