modifying names of keys for sample and scheduler to start with lowercase exactly as the names in the columns in the DataFrame

app.py

@@ -57,12 +57,12 @@ scheduler = CommitScheduler(
 #-------------------------------------------------------------------------------------------------------------------------------------------------------------
 def predict_insurance_charge(age, bmi, children, sex, smoker, region):
     sample = {
-        'Age': age,
-        'BMI': bmi,
-        'Children': children,
-        'Sex': sex,
-        'Smoker': smoker,
-        'Region': region
+        'age': age,
+        'bmi': bmi,
+        'children': children,
+        'sex': sex,
+        'smoker': smoker,
+        'region': region
     }
     data_point = pd.DataFrame([sample])
     prediction = insurance_charge_predictor.predict(data_point).tolist()     # use the model_ic.joblib retrieved above to make the prediction
@@ -75,12 +75,12 @@ def predict_insurance_charge(age, bmi, children, sex, smoker, region):
         with log_file.open("a") as f:
             f.write(json.dumps(
                 {
-                    'Age': age,
-                    'BMI': bmi,
-                    'Children': children,
-                    'Sex': sex,
-                    'Smoker': smoker,
-                    'Region': region,
+                    'age': age,
+                    'bmi': bmi,
+                    'children': children,
+                    'sex': sex,
+                    'smoker': smoker,
+                    'region': region,
                     'prediction': prediction[0]
                 }
             ))