Twig error when using a pattern in an admin theme

I'm having a similar issue, added ui_pattern display as a row display in a View, now I cannot edit my mega menu which uses a block from that view in it. I'm currently trying to figure if I can figure out a patch that checks to make sure template is available if not don't print or do something like Views does where it prints

Pattern Views row plugin does not support preview.

Here is a pretty crude patch that just checks if the current theme is admin theme and if so just won't render the pattern using the same method that Views uses inside the Views preview.

I was thinking a better answer would be checking to confirm if template can be loaded, if it cannot output an error instead of white screening the website.

@josh.fabean I can test the patch tomorrow but I suspect it might not solve our issue because we are not using Views when the issue happens but instead we are using a field formatter like in the picture.

here is a patch more global, which tries to fix this issue in a different way. Actually this issue is caused by the cache on run and could be easily fixed.
When defining a pattern inside a front theme, and previewing on another theme (admin or other), you get this error.

The patch also fixes compatibility with the ui_patterns_view integration.

This is an update to the previous patch, for the current 1.x branch.

The last submitted patch, 7: ui_patterns-preview-pattern-from-other-theme-3357835-7.patch, failed testing. View results →
- codesniffer_fixes.patch Interdiff of automated coding standards fixes only.

I tested the patch in #7 and I was still able to reproduce the issue. Then I found a similar issue from Components 🐛 Template is not defined error on admin pages when using administration theme Needs work . With both patches the error message still appears but it's more of a flash now before it disappears. I did get a screen capture of the error.

I get this error:

Twig\Error\LoaderError: There are no registered paths for namespace "components" in "modules/contrib/ui_patterns/templates/patterns-use-wrapper.html.twig" at line 9. in Twig\Loader\FilesystemLoader->findTemplate() (line 227 of /var/www/html/vendor/twig/twig/src/Loader/FilesystemLoader.php).

where is just this line

{% include use %}

The patch in #7 didn't solve it for me.

Hi @alesr,

Can you try using Twig function instead: https://twig.symfony.com/doc/3.x/functions/include.html

include tags is not recommended: https://twig.symfony.com/doc/3.x/tags/include.html