# Mac preview release build failed to load content in extension manager

**URL:** <https://discourse.slicer.org/t/mac-preview-release-build-failed-to-load-content-in-extension-manager/19899>\
**Category:** Support\
**Tags:** extensions-manager\
**Created:** [September 28, 2021, 6:48pm UTC](https://discourse.slicer.org/t/mac-preview-release-build-failed-to-load-content-in-extension-manager/19899 "2021-09-28T18:48:23Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![RuoyanMeng](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ruoyanmeng/32/12403_2.png) [@RuoyanMeng](https://discourse.slicer.org/u/RuoyanMeng)\
**Post date:** [September 29, 2021, 8:18am UTC](https://discourse.slicer.org/t/mac-preview-release-build-failed-to-load-content-in-extension-manager/19899/3 "2021-09-29T08:18:53Z")

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Hi, Thanks for the suggestions.  
I’ve built Slicer on my Mac by disabling the simpleITK module. However, when I try to build SlicerJupyter, a problem caused by lacking argon2-cffi wheel occurred, I also posted this problem here:

> [SlicerJupyter build failed on MacOSX due to failed building wheel for argon2-cffi](https://discourse.slicer.org/t/slicerjupyter-build-failed-on-macosx-due-to-failed-building-wheel-for-argon2-cffi/19804)

The advice received is to try to install it from extension manager.

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_[View the full topic](https://discourse.slicer.org/t/mac-preview-release-build-failed-to-load-content-in-extension-manager/19899)._