Formgrader not loading

[henry-goluss]

Hello everyone,

First of all, big thanks for the good work!
I just started a fresh install of Jupyterhub (TLJH) and nbgrader, unfortunatly, formgrader does not load. In the console I see error :

Refused to frame 'mydomain.com' because an ancestor violates the following Content Security Policy directive: "frame-ancestors 'none'".

Operating system

Ubuntu 22.04.4 LTS

nbgrader --version

nbgrader version 0.9.3

jupyterhub --version (if used with JupyterHub)

4.1.6

jupyter notebook --version

7.2.1

Expected behavior

Forgrader to load

Actual behavior

Formgrader not loading
and
console Error:
Refused to frame 'mydomain.com' because an ancestor violates the following Content Security Policy directive: "frame-ancestors 'none'".

Steps to reproduce the behavior

Install TLJH
Install nbgrader
Load formgrader

[brichet]

@henry-goluss you may find an answer in #1870

[henry-goluss]

Same behavior indeed. Thanks you, I will post my future messages there.

[brichet]

Closing as duplicate of #1870