# Campaign Builder can't Apply

**URL:** <https://forum.mautic.org/t/campaign-builder-cant-apply/11349>\
**Category:** Product Support\
**Created:** [October 10, 2019, 2:51pm UTC](https://forum.mautic.org/t/campaign-builder-cant-apply/11349 "2019-10-10T14:51:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![codes9](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/codes9/32/682_2.png) [@codes9](https://forum.mautic.org/u/codes9)\
**Post date:** [October 10, 2019, 2:51pm UTC](https://forum.mautic.org/t/campaign-builder-cant-apply/11349/1 "2019-10-10T14:51:42Z")

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**Your software**  
My Mautic version is: 2.15.3  
My PHP version is: 7.0.33

**Your problem**  
My problem is: Campaign builder loads up ok but never saves when you click apply.

**These errors are showing in the log:**  
[2019-10-10 13:47:23] mautic.ERROR: PHP Notice: require(): Failed opening required '/home/admin/domains/nutriwise.co.za/public\_html/contact/app/cache$  
[2019-10-10 13:47:23] mautic.ERROR: Symfony\Component\Debug\Exception\FatalErrorException: Notice: require(): Failed opening required '/home/admin/do$  
[2019-10-10 13:47:23] mautic.CRITICAL: Uncaught PHP Exception Symfony\Component\Debug\Exception\FatalErrorException: "Compile Error: require(): Faile$

Steps I have tried to fix the problem:

- I searched the error which points to this bug ([https://github.com/symfony/symfony/pull/26762](https://github.com/symfony/symfony/pull/26762)). But changes seem already incorporated.

Anyone have any ideas?

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<div class="post-metadata">

**Author:** ![codes9](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/codes9/32/682_2.png) [@codes9](https://forum.mautic.org/u/codes9)\
**Post date:** [October 10, 2019, 6:46pm UTC](https://forum.mautic.org/t/campaign-builder-cant-apply/11349/2 "2019-10-10T18:46:14Z")

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Tip for anyone struggling with bugs: [**Mautic to 2.14.2**](https://github.com/mautic/mautic/releases/download/2.14.2/2.14.2-update.zip) is considered fairly stable with minor bugs. Next stable release expecte is +/- 2.1.6.1

All releases ending in.0 are considered experimental until an incremental minor version fixes bugs.

I’ve started compiling a list of configurations that work with Mautic ([System Requirements - what works for you?](https://forum.mautic.org/t/system-requirements-what-works-for-you/11350))