Update app.py

app.py

@@ -47,7 +47,7 @@ if st.button("Generate Text"):
     if seed is not None:
         set_seed(seed)
 
-    if text:
+    if text and max_length:
         # Generate text
         out = generator(text, max_length=max_length, num_return_sequences=1)
         st.json(out)