Update app.py

app.py

@@ -14,6 +14,11 @@ def pipe_predict(text):
 
 def predict(text):
     """Perform text classification and generate results."""
+    text = text.strip()
+
+    if not text:
+        raise gr.Error("Text field cannot be empty!")
+        
     outputs = pipe_predict(text)
     # Sort outputs by label name
     outputs = sorted(outputs, key=lambda item: item["label"])