RecursionError: maximum recursion depth exceeded about wrapspawner HOT 1 CLOSED

[E 2020-05-11 12:16:40.876 JupyterHub web:1216] Uncaught exception in write_error
    Traceback (most recent call last):
      File "/anaconda3/lib/python3.7/site-packages/tornado/web.py", line 1214, in send_error
        self.write_error(status_code, **kwargs)
      File "/anaconda3/lib/python3.7/site-packages/jupyterhub/handlers/base.py", line 1108, in write_error
        html = self.render_template('%s.html' % status_code, **ns)
      File "/anaconda3/lib/python3.7/site-packages/jupyterhub/handlers/base.py", line 1043, in render_template
        template = self.get_template(name)
      File "/anaconda3/lib/python3.7/site-packages/jupyterhub/handlers/base.py", line 1037, in get_template
        return self.settings['jinja2_env'].get_template(name)
      File "/anaconda3/lib/python3.7/site-packages/jinja2/environment.py", line 830, in get_template
        return self._load_template(name, self.make_globals(globals))
      File "/anaconda3/lib/python3.7/site-packages/jinja2/environment.py", line 804, in _load_template
        template = self.loader.load(self, name, globals)
      File "/anaconda3/lib/python3.7/site-packages/jinja2/loaders.py", line 405, in load
        return loader.load(environment, name, globals)
      File "/anaconda3/lib/python3.7/site-packages/jinja2/loaders.py", line 405, in load
        return loader.load(environment, name, globals)
      File "/anaconda3/lib/python3.7/site-packages/jinja2/loaders.py", line 405, in load
        return loader.load(environment, name, globals)
      [Previous line repeated 979 more times]
    RecursionError: maximum recursion depth exceeded