Update app.py

app.py

@@ -19,6 +19,9 @@ def preprocess_image(image):
 
 # Prediction function
 def predict_cervical_image(image):
+    if image is None:
+        print("⚠️ Skipped empty call (no image uploaded yet)")
+        return "Please upload a cervical image first."
     img_array = preprocess_image(image)
     prediction = model.predict(img_array)[0][0]  # assuming output is single sigmoid neuron