# Error when modifying LESS files for Focus Items

**URL:** <https://forum.mautic.org/t/error-when-modifying-less-files-for-focus-items/20549>\
**Category:** Mautic 3 - Install/Upgrade Support\
**Created:** [August 19, 2021, 4:39pm UTC](https://forum.mautic.org/t/error-when-modifying-less-files-for-focus-items/20549 "2021-08-19T16:39:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![miamiman](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/miamiman/32/1118_2.png) [@miamiman](https://forum.mautic.org/u/miamiman)\
**Post date:** [August 19, 2021, 4:39pm UTC](https://forum.mautic.org/t/error-when-modifying-less-files-for-focus-items/20549/1 "2021-08-19T16:39:03Z")

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I made some minor class changes to the following less files:

- …/plugins/MauticFocusBundle/Views/Builder/Modal/style.less.php
- …/plugins/MauticFocusBundle/Views/Builder/Notification/style.less.php

And now, I get the following errors:

- mautic.ERROR: Exception: parse error: failed at `` line: 304 - in file … /plugins/MauticFocusBundle/Include/lessc.inc.php - at line 4081

And the back-end doesn’t show the various options, even when reapplying the original less configurations?

I’ve deleted cache various times.

Any ideas?

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<div class="post-metadata">

**Author:** ![miamiman](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/miamiman/32/1118_2.png) [@miamiman](https://forum.mautic.org/u/miamiman)\
**Post date:** [August 19, 2021, 5:00pm UTC](https://forum.mautic.org/t/error-when-modifying-less-files-for-focus-items/20549/2 "2021-08-19T17:00:39Z")

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Again answering my own questions … in the hopes that someone else might learn.

The answer can be found at:

> **[Change default style for Mautic Focus Items](https://www.leuchtfeuer.com/en/mautic-know-how/mautic/change-default-style-for-mautic-focus-items/)**
>
> Focus items that match your own design and can be maintained without HTML knowledge – a dream for every Mautic editor! With some tricks you can adjust the default style individually for each Mautic installation.

You start changing the parameters in one and you affect the other and vice-versa.

Perhaps something else to improve upon in a future release.