fixed bugs

backend/event_signups.py

@@ -1,4 +1,4 @@
-from database import execute, fetch_one
+from database import execute, fetch_one, fetch_all
 
 
 def respond_to_event(event_id, user_id, status):

backend/main.py

@@ -37,6 +37,7 @@ from permissions import (
     has_role,
     whoami,
     get_role,
+    get_member_role,
 )
 
 from rooms import (
@@ -339,8 +340,8 @@ def api_update_member_role(
     data: MemberRoleUpdate,
     current_user: int = Depends(get_current_user),
 ):
-    current_role = get_role(room_id, current_user)
-    target_role = get_role(room_id, user_id)
+    current_role = get_member_role(room_id, current_user)
+    target_role = get_member_role(room_id, user_id)
 
     if current_role is None:
         raise HTTPException(