diff --git a/main.py b/main.py
index c69795a..3033e39 100644
--- a/main.py
+++ b/main.py
@@ -10,7 +10,7 @@ proxies, WEB_PORT, LLM_MODEL, CONCURRENT_COUNT, AUTHENTICATION = \
 
 # 如果WEB_PORT是-1, 则随机选取WEB端口
 PORT = find_free_port() if WEB_PORT <= 0 else WEB_PORT
-AUTHENTICATION = None if AUTHENTICATION == [] else AUTHENTICATION
+if not AUTHENTICATION: AUTHENTICATION = None
 
 initial_prompt = "Serve me as a writing and programming assistant."
 title_html = """<h1 align="center">ChatGPT 学术优化</h1>"""
@@ -105,8 +105,7 @@ def auto_opentab_delay():
     def open(): 
         time.sleep(2)
         webbrowser.open_new_tab(f'http://localhost:{PORT}')
-    t = threading.Thread(target=open)
-    t.daemon = True; t.start()
+    threading.Thread(target=open, name="open-browser", daemon=True).start()
 
 auto_opentab_delay()
 demo.title = "ChatGPT 学术优化"
diff --git a/toolbox.py b/toolbox.py
index e50b973..d657c1f 100644
--- a/toolbox.py
+++ b/toolbox.py
@@ -237,13 +237,10 @@ def get_conf(*args):
         except: r = getattr(importlib.import_module('config'), arg)
         res.append(r)
         # 在读取API_KEY时，检查一下是不是忘了改config
-        if arg=='API_KEY' and len(r) != 51:
-            assert False, "正确的API_KEY密钥是51位，请在config文件中修改API密钥, 添加海外代理之后再运行。" + \
+        assert arg != 'API_KEY' or len(r) == 51, "正确的API_KEY密钥是51位，请在config文件中修改API密钥, 添加海外代理之后再运行。" \
                         "（如果您刚更新过代码，请确保旧版config_private文件中没有遗留任何新增键值）"
     return res
 
 def clear_line_break(txt):
-    txt = txt.replace('\n', ' ')
-    txt = txt.replace('  ', ' ')
-    txt = txt.replace('  ', ' ')
-    return txt
\ No newline at end of file
+    import re
+    return re.sub(r"\s+", " ", txt)
\ No newline at end of file