I got NBS running on linux. Federated it with portal.
When trying to open NBS from the tab I am getting
Unexpected token < in JSON at position 4
This is in the initial setup of NBS, before running the Administration: Prepare portal items for notebooks.
i have a same issue.
installed Arcgis NoteBook Server 10.8 on Windows Server 2019 using Install ArcGIS Notebook Server—ArcGIS Notebook Server | Documentation for ArcGIS Enterprise
Fedareted to portal over ArcGIS Web Adaptor, NoteBook server validated.
But i can't pass this error