# Plugin not work and show

**URL:** <https://meta.discourse.org/t/plugin-not-work-and-show/66065>\
**Category:** Product Support\
**Created:** [July 12, 2017, 4:34pm UTC](https://meta.discourse.org/t/plugin-not-work-and-show/66065 "2017-07-12T16:34:45Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![Bank\_Live](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/bank_live/32/75893_2.png) [@Bank\_Live](https://meta.discourse.org/u/Bank_Live)\
**Post date:** [July 12, 2017, 4:34pm UTC](https://meta.discourse.org/t/plugin-not-work-and-show/66065/1 "2017-07-12T16:34:45Z")

</div>

before add new plugin every plugin it work normal But after add discourse-calendar-plugin get plugin MathJax not work and whos-online not show.

 ![](https://global.discourse-cdn.com/meta/original/3X/9/b/9be02f6b6a118ba03072dd058798f810340d4785.jpg)

 ![](https://global.discourse-cdn.com/meta/original/3X/8/b/8b618ffbc642643eeff15dd6a16310e6212bc859.jpg)

I try

```
cd /var/discourse
git pull
./launcher rebuild app

```

many times not work. I think it caused old cache of MathJax and whos-online.  
How to i fix

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_[View the full topic](https://meta.discourse.org/t/plugin-not-work-and-show/66065)._