crawler 百度翻译出问题，请问下是什么原因啊

Traceback (most recent call last): File ".\pre3.py", line 84, in main() File ".\pre3.py", line 78, in main sign, acs_token = get_sign_and_token(query, gtk, lang) File ".\pre3.py", line 53, in get_sign_and_token sign = execjs.compile(baidu_js).call('e', query, gtk) File "D:\python38\lib\site-packages\execjs_abstract_runtime_context.py", line 37, in call return self._call(name, *args) File "D:\python38\lib\site-packages\execjs_external_runtime.py", line 92, in _call return self.eval("{identifier}.apply(this, {args})".format(identifier=identifier, args=args)) File "D:\python38\lib\site-packages\execjs_external_runtime.py", line 78, in eval return self.exec(code) File "D:\python38\lib\site-packages\execjs_abstract_runtime_context.py", line 18, in exec return self.exec(source) File "D:\python38\lib\site-packages\execjs_external_runtime.py", line 88, in exec return self._extract_result(output) File "D:\python38\lib\site-packages\execjs_external_runtime.py", line 167, in _extract_result raise ProgramError(value) execjs._exceptions.ProgramError: TypeError: 'global' 未定义