# Jupyterhub spawn failed error after upgrade

**URL:** <https://discourse.jupyter.org/t/jupyterhub-spawn-failed-error-after-upgrade/11443>\
**Category:** JupyterHub\
**Created:** [October 27, 2021, 4:18pm UTC](https://discourse.jupyter.org/t/jupyterhub-spawn-failed-error-after-upgrade/11443 "2021-10-27T16:18:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jupyterhub\_user](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@jupyterhub\_user](https://discourse.jupyter.org/u/jupyterhub_user)\
**Post date:** [October 27, 2021, 4:18pm UTC](https://discourse.jupyter.org/t/jupyterhub-spawn-failed-error-after-upgrade/11443/1 "2021-10-27T16:18:05Z")

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I am getting jupyterhub Spawn failed error while trying to login after I upgraded to latest jupyterhub 1.4.2 in our server.  
`Exception in Future <Task finished coro=<BaseHandler.spawn_single_user.<locals>.finish_user_spawn() done, defined at /opt/anaconda3/lib/python3.7/site-packages/jupyterhub/handlers/base.py:900> exception=TimeoutError("Server at http://127.0.0.1:36379/user/username/ didn't respond in 300 seconds")> after timeout`