Update app.py

app.py

@@ -308,7 +308,10 @@ def generate_text_chunked(input_text, model, generation_parameters, max_tokens_t
 
 # Gradio Interface
 def gradio_interface(purpose, history):
-    history = json.loads(history) if history else []
+    try:
+        history = json.loads(history) if history else []
+    except json.JSONDecodeError:
+        history = []
     result = run(purpose, history)
     return next(result)