Update app.py

stringify stats response

app.py

@@ -622,7 +622,7 @@ def chat(prompt, user_window, pwd_window, past, response, gptModel, uploaded_ima
         isBoss = True
         if prompt == 'stats':
             response = genUsageStats()
-            return [past, md(response), None, gptModel, uploaded_image_file, plot]
+            return [past, str(response), None, gptModel, uploaded_image_file, plot]
         if prompt == 'reset':
             response = genUsageStats(True)
             return [past, md(response), None, gptModel, uploaded_image_file, plot]