Update app.py

app.py

@@ -4,6 +4,11 @@ import json
 import plotly
 
 def predict_fraud(selected_model, selected_interpretability_method, step, transaction_type, amount, oldbalanceOrg):
+    # Validation check for all fields
+    
+    if not all([selected_model, selected_interpretability_method, step, transaction_type, amount, oldbalanceOrg]):
+    return "All fields are required. Please ensure no fields are left empty."
+
     url = "https://sea-lion-app-5kxay.ondigitalocean.app/predict_and_explain"
     data = {
         'selected_model': selected_model,