Update app.py

app.py

@@ -30,7 +30,7 @@ async def handle_request(data_func, num_parameters, username, password):
     basic_creds_check(username, password)
     async with ClientSession() as sess:
         print("password :" + password)
-        logger.info("username :", username , " password :" + password)
+        logger.info("username : "+ username + " password :" + password)
         session_result = await gen_session(sess, username, password)
         if session_result == 0:
             raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED)