3D slicer No reaction after clicked INSTALL


I’m using 3D slicer version 4.11.20200930 (the stable release) on Windows and trying to install Jupyter Notebook extension. But every time I clicked on INSTALL and the green notifications show up, but not the install progress bar.

I’ve tried to reinstall Slicer but the problem remains the same. Could someone help me fix this? Thank you in advance!

Same issue as this I believe: Extension service is down

We hope it’s fixed soon