# Can't use "Post Question" button on addon page
**URL:** https://forums.concretecms.org/t/cant-use-post-question-button-on-addon-page/2082
**Category:** Marketplace
**Created:** [January 5, 2022, 9:03am UTC](https://forums.concretecms.org/t/cant-use-post-question-button-on-addon-page/2082 "2022-01-05T09:03:53Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@madesimplemedia](https://forums.concretecms.org/u/madesimplemedia)
#### Post date: [January 5, 2022, 9:03am UTC](https://forums.concretecms.org/t/cant-use-post-question-button-on-addon-page/2082/1 "2022-01-05T09:03:53Z")
I am trying to ask a question about an addon (Rescan All Files) but when I click the Post Question button it throws a javascript error in my console and doesn’t do anything:
main.js:1 Uncaught TypeError: Cannot read properties of null (reading ‘nodeName’)
at M (main.js:1)
at Function.e.fancybox (main.js:1)
at HTMLAnchorElement.onclick (VM361 support:323)
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### Author:  [@ConcreteOwl](https://forums.concretecms.org/u/ConcreteOwl)
#### Post date: [January 5, 2022, 5:07pm UTC](https://forums.concretecms.org/t/cant-use-post-question-button-on-addon-page/2082/2 "2022-01-05T17:07:02Z")
You have to sign-in to the marketplace before that button will work for you.
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### Author:  [@madesimplemedia](https://forums.concretecms.org/u/madesimplemedia)
#### Post date: [January 6, 2022, 8:46am UTC](https://forums.concretecms.org/t/cant-use-post-question-button-on-addon-page/2082/3 "2022-01-06T08:46:49Z")
Thanks you are right. It would be good for usability if the button was replaced with a “Login to Post a Question” button if the user was not signed in.