fix(admin): force string to groups name

admin/src/admin/views/ApiViews.py

@@ -343,7 +343,7 @@ def group(group_id=False):
 @login_required
 def groups(provider=False):
     if request.method == "GET":
-        sorted_groups = sorted(app.admin.get_mix_groups(), key=lambda k: k["name"])
+        sorted_groups = sorted(app.admin.get_mix_groups(), key=lambda k: str(k["name"]))
         if current_user.role != "admin":
             ## internal groups should be avoided as are assigned with the role
             sorted_groups = [sg for sg in sorted_groups if not system_group(sg["name"])]