Update app.py

app.py

@@ -108,7 +108,7 @@ def generate(prompt, temperature=0.9, max_new_tokens=256, top_p=0.95, repetition
 
     if fim_mode:
         output = prefix
-    elif: chat_mode:
+    elif chat_mode:
         output = chat_prompt
     else:
         output = prompt