diff --git a/api-server/app/module/mysql_utils.py b/api-server/app/module/mysql_utils.py
index 95ae3c4..fc26cd6 100644
--- a/api-server/app/module/mysql_utils.py
+++ b/api-server/app/module/mysql_utils.py
@@ -54,7 +54,7 @@ async def get_user_info_from_id(user_id:int):
         raise HTTPException(status.HTTP_404_NOT_FOUND)
     return user_info
 
-async def get_user_id_from_name(user_name:str):
+async def get_user_id_from_name(user_name:str): 
     async with await get_cnx() as cnx:
         async with await cnx.cursor() as cur:
             query = '''
@@ -127,9 +127,6 @@ async def delete_user_from_id(user_id:int):
                 }
             try:
                 await cur.execute(query, data)
-            except IntegrityError as e:
-                await cnx.rollback()
-                raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail="user already exist")
             await cnx.commit()
     return
 
@@ -230,9 +227,6 @@ async def delete_blog_from_id(blog_id:int):
                 }
             try:
                 await cur.execute(query, data)
-            except IntegrityError as e:
-                await cnx.rollback()
-                raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail="already exist")
             await cnx.commit()
     return