Update app.py

app.py

@@ -333,7 +333,7 @@ def generate_callback_wrapper(input_midi,
 
     print('Selected model type:', model_selector)
 
-    if not model_State:
+    if not model_state:
         model_state = load_model(model_selector)
     
     print('Num prime tokens:', num_prime_tokens)