Am using jupyterlab version 3.0 with python 3.7 & ipkernel 6.4.2, while run script in debug mode, suddenly kernel is going to unknown state, i checked logs it displaying following message…
[E 2022-03-15 11:56:05.004 SingleUserLabApp mixins:538] Error notifying Hub of activity
Traceback (most recent call last):
File “/opt/conda/envs/jhub/lib/python3.7/site-packages/jupyterhub/singleuser/mixins.py”, line 536, in notify
await client.fetch(req)
tornado.httpclient.HTTPClientError: HTTP 403: Forbidden
[D 2022-03-15 11:56:05.160 SingleUserLabApp handlers:228] Nudge: attempt 55 on kernel 29587fc0-14cb-45b7-8394-8ccbbb6e14ed
[D 2022-03-15 11:56:05.661 SingleUserLabApp handlers:228] Nudge: attempt 56 on kernel 29587fc0-14cb-45b7-8394-8ccbbb6e14ed
[D 2022-03-15 11:56:06.163 SingleUserLabApp handlers:228] Nudge: attempt 57 on kernel 29587fc0-14cb-45b7-8394-8ccbbb6e14ed
[D 2022-03-15 11:56:06.664 SingleUserLabApp handlers:228] Nudge: attempt 58 on kernel 29587fc0-14cb-45b7-8394-8ccbbb6e14ed
[D 2022-03-15 11:56:07.166 SingleUserLabApp handlers:228] Nudge: attempt 59 on kernel 29587fc0-14cb-45b7-8394-8ccbbb6e14ed
[D 2022-03-15 11:56:07.436 JupyterHub log:189] 200 GET /jhub/hub/health (@35.191.15.140) 0.68ms
[W 2022-03-15 11:56:07.667 SingleUserLabApp handlers:228] Nudge: attempt 60 on kernel 29587fc0-14cb-45b7-8394-8ccbbb6e14ed
[D 2022-03-15 11:56:08.169 SingleUserLabApp handlers:228] Nudge: attempt 61 on kernel 29587fc0-14cb-45b7-8394-8ccbbb6e14ed