fix: empty list instead of None

app.py

@@ -162,7 +162,7 @@ def generate(
         #seed=seed,
     )
     #seed = seed + 1
-    history = None # explicitly set the history as none so no history is important anymore
+    history = [] # explicitly set the history as none so no history is important anymore
     formatted_prompt = format_prompt(prompt, history, system_prompt)
 
     print(f"Formatted Prompt: {formatted_prompt}")