port-forward isn't working when running sub notebook

[samos123]

Noticed this error and connection refused when trying to go to localhost:8888:

simple 2023/09/19 15:12:05 Port-forward error: error copying from remote stream to local connection: readfrom tcp6 [::1]:8888->[::1]:36540: write tcp6 [::1]:8888->[::1]:36540: write: broken pipe
simple 2023/09/19 15:12:05 Restarting port forward (index = 0), after backoff: 1s
simple 2023/09/19 15:12:06 Waiting for port-forward to be ready
simple 2023/09/19 15:12:06 Port-forward ready
simple 2023/09/19 15:12:06 Opening browser to http://localhost:8888?token=default
simple 2023/09/19 15:12:35 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred
simple 2023/09/19 15:12:35 Restarting port forward (index = 1), after backoff: 2s
simple 2023/09/19 15:12:37 Waiting for port-forward to be ready
simple 2023/09/19 15:12:37 Port-forward ready
simple 2023/09/19 15:12:37 Opening browser to http://localhost:8888?token=default
simple 2023/09/19 15:12:39 Port-forward error: error copying from remote stream to local connection: readfrom tcp6 [::1]:8888->[::1]:57716: write tcp6 [::1]:8888->[::1]:57716: write: broken pipe
simple 2023/09/19 15:12:39 Restarting port forward (index = 2), after backoff: 4s
simple 2023/09/19 15:12:43 Done trying to port-forward
simple 2023/09/19 15:13:09 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred
simple 2023/09/19 15:13:09 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred
simple 2023/09/19 15:13:09 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred
simple 2023/09/19 15:13:09 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred
simple 2023/09/19 15:13:09 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred
simple 2023/09/19 15:13:09 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred
simple 2023/09/19 15:13:09 Port-forward error: error creating forwarding stream for port 8888 -> 8888: Timeout occurred

I could workaround it by manually running kubectl port-forward