Update app.py

app.py

@@ -194,7 +194,7 @@ def on_snapshot(doc_snapshot, changes, read_time):
             print(f"New data detected: {new_data}")
             concentration=predict_conc(field1)
             if concentration==0:
-                send_msg(concentration,"The water is safe for use!!")
+                send_msg(0,"The water is safe for use!!")
                 
             else:
                 send_msg(concentration,"You may boil the water to 50°C to eradicate the bacteria.")