How serious is a IOPub data rate exceeded warning

For some reason I am getting this warning. Not sure why as the code hasn’t changed. I’m using python 3.11 and using a rest api.

It tells me to change the ServerApp.iopub_data_rate_limit` but I don’t know how to do that??

[W 2024-01-11 14:39:33.983 ServerApp] IOPub data rate exceeded.
The Jupyter server will temporarily stop sending output
to the client in order to avoid crashing it.
To change this limit, set the config variable

Current values:
ServerApp.iopub_data_rate_limit=1000000.0 (bytes/sec)
ServerApp.rate_limit_window=3.0 (secs)