fix unicode bug

toolbox.py

@@ -47,7 +47,8 @@ def write_results_to_file(history, file_name=None):
     """
     import os, time
     if file_name is None:
-        file_name = time.strftime("chatGPT分析报告%Y-%m-%d-%H-%M-%S", time.localtime()) + '.md'
+        # file_name = time.strftime("chatGPT分析报告%Y-%m-%d-%H-%M-%S", time.localtime()) + '.md'
+        file_name = 'chatGPT分析报告' + time.strftime("%Y-%m-%d-%H-%M-%S", time.localtime()) + '.md'
     os.makedirs('./gpt_log/', exist_ok=True)
     with open(f'./gpt_log/{file_name}', 'w', encoding = 'utf8') as f:
         f.write('# chatGPT 分析报告\n')