diff --git a/crazy_functions/latex_fns/latex_toolbox.py b/crazy_functions/latex_fns/latex_toolbox.py
index a0c889a..5adc7ea 100644
--- a/crazy_functions/latex_fns/latex_toolbox.py
+++ b/crazy_functions/latex_fns/latex_toolbox.py
@@ -281,9 +281,12 @@ def rm_comments(main_file):
 def find_tex_file_ignore_case(fp):
     dir_name = os.path.dirname(fp)
     base_name = os.path.basename(fp)
+    # 如果输入的文件路径是正确的
+    if os.path.exists(pj(dir_name, base_name)): return pj(dir_name, base_name)
+    # 如果不正确，试着加上.tex后缀试试
     if not base_name.endswith('.tex'): base_name+='.tex'
     if os.path.exists(pj(dir_name, base_name)): return pj(dir_name, base_name)
-    # go case in-sensitive
+    # 如果还找不到，解除大小写限制，再试一次
     import glob
     for f in glob.glob(dir_name+'/*.tex'):
         base_name_s = os.path.basename(fp)
diff --git a/request_llm/bridge_chatgpt.py b/request_llm/bridge_chatgpt.py
index 87cc664..5a7a274 100644
--- a/request_llm/bridge_chatgpt.py
+++ b/request_llm/bridge_chatgpt.py
@@ -177,14 +177,13 @@ def predict(inputs, llm_kwargs, plugin_kwargs, chatbot, history=[], system_promp
                 yield from update_ui(chatbot=chatbot, history=history, msg="非Openai官方接口返回了错误:" + chunk.decode()) # 刷新界面
                 return
             
-            # print(chunk.decode()[6:])
-            if is_head_of_the_stream and (r'"object":"error"' not in chunk.decode()):
+            chunk_decoded = chunk.decode()
+            if is_head_of_the_stream and (r'"object":"error"' not in chunk_decoded) and (r"choices" not in chunk_decoded):
                 # 数据流的第一帧不携带content
                 is_head_of_the_stream = False; continue
             
             if chunk:
                 try:
-                    chunk_decoded = chunk.decode()
                     # 前者是API2D的结束条件，后者是OPENAI的结束条件
                     if ('data: [DONE]' in chunk_decoded) or (len(json.loads(chunk_decoded[6:])['choices'][0]["delta"]) == 0):
                         # 判定为数据流的结束，gpt_replying_buffer也写完了