400 Client Error: Bad Request for url: https://services.sentinel-hub.com

I had the above issue when i had tried to test Define the workflow part at https://eo-learn.readthedocs.io/en/latest/examples/land-cover-map/SI_LULC_pipeline.html#1.-Define-the-Area-of-Interest-(AOI):

I believe the instance_id you’ve used is no longer valid. Please use your valid instance_id.

Regards,
Matej