add print msgs

app.py

@@ -169,6 +169,7 @@ def respond(_question, _chat_bot, _app_cfg, params_form, num_beams, repetition_p
             'repetition_penalty': repetition_penalty_2,
             "max_new_tokens": 896 
         }
+    print('msgs:', _context)
     code, _answer, _, sts = chat(_app_cfg['img'], _context, None, params)
     print('<Assistant>:', _answer)