# Core blocks breaking due to lack of JQuery
**URL:** https://forums.concretecms.org/t/core-blocks-breaking-due-to-lack-of-jquery/3877
**Category:** Developing with Concrete
**Created:** [August 30, 2022, 9:35pm UTC](https://forums.concretecms.org/t/core-blocks-breaking-due-to-lack-of-jquery/3877 "2022-08-30T21:35:04Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Doki](https://forums.concretecms.org/u/Doki)
#### Post date: [August 30, 2022, 9:35pm UTC](https://forums.concretecms.org/t/core-blocks-breaking-due-to-lack-of-jquery/3877/1 "2022-08-30T21:35:04Z")
FYI, so far I’ve found that the Calendar block is breaking due to a lack of JQuery definitions within the block, I’m guessing there’s probably more blocks like this out there in core.
Unless JQuery is required in the theme (and I don’t read anywhere that it is) the jQuery dependency should be handled within the block code – as now I have to hack/override core code to make it work, which is always a terrible proposition.
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### Author:  [@EvanCooper](https://forums.concretecms.org/u/EvanCooper)
#### Post date: [September 1, 2022, 7:34pm UTC](https://forums.concretecms.org/t/core-blocks-breaking-due-to-lack-of-jquery/3877/2 "2022-09-01T19:34:20Z")
Hi @Doki -
Can you add an issue here - sounds like something that could use a look from the core team:
> **[Issues · concretecms/concretecms](https://github.com/concretecms/concretecms/issues)**
>
> Official repository for Concrete CMS development. Contribute to concretecms/concretecms development by creating an account on GitHub.
Thanks!
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### Author:  [@Doki](https://forums.concretecms.org/u/Doki)
#### Post date: [September 27, 2022, 9:27pm UTC](https://forums.concretecms.org/t/core-blocks-breaking-due-to-lack-of-jquery/3877/4 "2022-09-27T21:27:28Z")
Sorry, missed this from a few weeks earlier – just added a ticket.