# Issues with mautic builder

**URL:** <https://forum.mautic.org/t/issues-with-mautic-builder/28868>\
**Category:** Product Support\
**Created:** [August 7, 2023, 5:46pm UTC](https://forum.mautic.org/t/issues-with-mautic-builder/28868 "2023-08-07T17:46:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sarssysar](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/sarssysar/32/6499_2.png) [@sarssysar](https://forum.mautic.org/u/sarssysar)\
**Post date:** [August 7, 2023, 5:46pm UTC](https://forum.mautic.org/t/issues-with-mautic-builder/28868/1 "2023-08-07T17:46:06Z")

</div>

**Your software**  
My Mautic version is: 4.4.9  
My PHP version is: 8.0  
My Database type and version is:

**Your problem**  
My problem is:  
In general, I’m struggling with the mautic builder. When I make a new theme, the classes in the twig files aren’t automatically added to the elements they’ve been attached to, and/or I have to add the classes in the Style editor, but the class won’t save.

On another note, if I were to make an email using a new theme template and make changes to the twig file, I have to switch to a new theme, save, and then switch back to the correct theme and open builder. Similarly with editing, I have to save and exit the builder, open the preview to see if the changes took place.

These errors are showing in the log:

Steps I have tried to fix the problem: