# Mautic 4.0 GrapeBuilderJs Not Showing Up as the default builder plus bugs

**URL:** <https://forum.mautic.org/t/mautic-4-0-grapebuilderjs-not-showing-up-as-the-default-builder-plus-bugs/20902>\
**Category:** Mautic 4 Install/Upgrade Support\
**Created:** [September 16, 2021, 3:05pm UTC](https://forum.mautic.org/t/mautic-4-0-grapebuilderjs-not-showing-up-as-the-default-builder-plus-bugs/20902 "2021-09-16T15:05:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mita.michael](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mita.michael/32/4846_2.png) [@mita.michael](https://forum.mautic.org/u/mita.michael)\
**Post date:** [September 16, 2021, 3:05pm UTC](https://forum.mautic.org/t/mautic-4-0-grapebuilderjs-not-showing-up-as-the-default-builder-plus-bugs/20902/1 "2021-09-16T15:05:29Z")

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**Your software**  
My Mautic version is: 4.0  
My PHP version is: 7.4  
My Database type and version is: mariadb 10.\*

Been trying to integrate my MJML templates into mautic and came across a couple of issues. Shoutout to @joeyk for helping me solve some of them.

Firstly using and modifying an mjml theme that comes with mautic and reuploading yields a missing “email.html.twig” but there shouldn’t be one (it’s an mjml). I was advised to duplicate an mjml.twig file and rename to an html.twig which shouldn’t really be the solution but that worked.

Secondly GrapeBuilderJS doesn’t appear as a default builder on my fresh 4.0 it’s still at legacy so I can’t even see mjml templates just the old ones. Tried to look around for an option to turn it on, but nothing.

Lastly when I create a new email based on an mjml template and duplicate, it duplicates into an html and essentially breaks the template. However if I go back to edit the non duplicate, its still an mjml! (The templates were edited on the 3.3.4)

Should I create an issue on github?

Kind Regards

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<div class="post-metadata">

**Author:** ![mita.michael](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mita.michael/32/4846_2.png) [@mita.michael](https://forum.mautic.org/u/mita.michael)\
**Post date:** [December 13, 2021, 1:58pm UTC](https://forum.mautic.org/t/mautic-4-0-grapebuilderjs-not-showing-up-as-the-default-builder-plus-bugs/20902/2 "2021-12-13T13:58:20Z")

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GrapeBuilderJs Issue is still existing. I can’t edit the code directly on pre existing templates also when I try the blank templates they are in HTML rather than MJML.

Additionally there was an upgrade issue 3.3.4 \> 4.0.2 where I couldn’t even save the emails and after going on a wild goose chase I found this on github which seemed to fix it.

[https://github.com/mautic/mautic/issues/9128](https://github.com/mautic/mautic/issues/9128)