Update app.py

app.py

@@ -126,7 +126,7 @@ if "session_rating" not in st.session_state:
     st.session_state.session_rating = 0
 
 
-service_account = gspread.service_account_from_dict(credential)
+service_account = gspread.service_account_from_dict(st.secrets["google_sheet_credential"])
 workbook= service_account.open("aitGPT-qa-log")
 worksheet_qa = workbook.worksheet("Sheet1")
 worksheet_comment = workbook.worksheet("Sheet2")