Template "default.html.twig" is not defined

[JohnnyBizzel]

Not sure if this is a bug or me not knowing how to configure Grav.

Error is on line 345: RuntimeException
…/­system/­src/­Grav/­Common/­Twig/­Twig.php

[MATsxm]

Hi @JohnnyBizzel
It is difficult to answer without more information but, according to your title, it seems that the problem is related to the fact that you have a page of content (.md) called default.md but that there is no such thing as the corresponding rendering page default.html.twig that the system can not find it.

The concept is very easy. you always have a page of content xxx.md placed in user/pages that must be associated with a corresponding rendering page xxx.html.twig with the same name (not same extension) in user/themes/nameofthetheme/templates.

More information here:
https://learn.getgrav.org/themes/theme-basics#content-pages-twig-templates

Here, so:
either rename the default.md page to match an existing view or create (rename) an existing view called default.html.twig.
just for test, rename your page default.md to about.en.md, then clean caches and see what happen. 😉

[MrityunjaiKumar]

This problem still persists, I have installed this theme from admin panel of the latest grav cms.
Even tried renaming the default.md to default.html.twig .

[MATsxm]

This is not what is written above, both default.md and default.html.twig, SHOULD exist as one is for the content, the other file for the view.
please follow what IS written:

just for test, rename your page default.md to about.en.md, then clean caches and see what happen.

(of course, the corresponding view about.html.twig should exist in the folder: templates/modular)