Update app.py

app.py

@@ -52,7 +52,7 @@ def predict_insurance_charges(age, sex, bmi, smoker, region):
     }
     data_point = pd.DataFrame([sample])
  
-    prediction = model.predict(input_data).tolist()
+    prediction = model.predict(data_point).tolist()
 
     with scheduler.lock:
         with log_file.open("a") as f: