Twig\Error\LoaderError: Template "modules/field_group/templates/field-group-html-element.html.twig" is not defined

These files are missing from the field_group\templates folder:
field-group-accordion.html.twig
field-group-accordion-item.html.twig
field-group-html-element.html.twig

The website encountered an unexpected error. Try again later.

Twig\Error\LoaderError: Template "modules/contrib/field_group/templates/field-group-html-element.html.twig" is not defined. in Twig\Loader\ChainLoader->getCacheKey() (line 20 of themes/contrib/stable/templates/layout/layout--onecol.html.twig).

Twig\Environment->getTemplateClass() (Line: 204)
Drupal\Core\Template\TwigEnvironment->getTemplateClass() (Line: 312)
Twig\Environment->load() (Line: 39)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 536)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 240)
Drupal\Core\Render\Renderer->render() (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 52)
__TwigTemplate_2db86cbcebdb711e9eb07c946f570656->doDisplay() (Line: 394)
Twig\Template->displayWithErrorHandling() (Line: 367)
Twig\Template->display() (Line: 379)
Twig\Template->render() (Line: 38)
Twig\TemplateWrapper->render() (Line: 39)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 480)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 240)
Drupal\Core\Render\Renderer->render() (Line: 238)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 231)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 704)
Drupal\Core\DrupalKernel->handle() (Line: 19)

Set to major, because it breaks editing.

Looks more like a problem with selecting the proper path.
Why would twig files be added to the theme?!
Or has it todo with D10.2.7.
Could this be the problem?

If I set the editing of content to another theme (claro compact) the error looks like this:

Twig\Error\LoaderError: Template "modules/contrib/field_group/templates/field-group-html-element.html.twig" is not defined. in Twig\Loader\ChainLoader->getCacheKey() (line 23 of core/modules/layout_discovery/layouts/onecol/layout--onecol.html.twig).

Twig\Environment->getTemplateClass() (Line: 204)
Drupal\Core\Template\TwigEnvironment->getTemplateClass() (Line: 312)
Twig\Environment->load() (Line: 39)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 536)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 240)
Drupal\Core\Render\Renderer->render() (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 52)
__TwigTemplate_c942cbadb82ae26279449beb948fc9c7->doDisplay() (Line: 394)
Twig\Template->displayWithErrorHandling() (Line: 367)
Twig\Template->display() (Line: 379)
Twig\Template->render() (Line: 38)
Twig\TemplateWrapper->render() (Line: 39)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 480)
Drupal\Core\Render\Renderer->doRender() (Line: 493)
Drupal\Core\Render\Renderer->doRender() (Line: 240)
Drupal\Core\Render\Renderer->render() (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 44)
__TwigTemplate_aee29571791ddfa1fe525671ed8454f7->doDisplay() (Line: 394)
Twig\Template->displayWithErrorHandling() (Line: 367)
Twig\Template->display() (Line: 379)
Twig\Template->render() (Line: 38)
Twig\TemplateWrapper->render() (Line: 39)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 480)
Drupal\Core\Render\Renderer->doRender() (Line: 240)
Drupal\Core\Render\Renderer->render() (Line: 238)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 231)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 704)
Drupal\Core\DrupalKernel->handle() (Line: 19)

Same error as above with claro

Stepping back a few days made the error go away:

composer require drupal/field_group:3.x-dev#eb2167b7

This is ugly. Happening to me now. Any solution?

Seems like I accidentally also removed field-group-html-element.html.twig when moving the accordion templates. I re-added the template, sorry for the issue.
Can you check if it's fixed in latest dev?

I ran the update
composer require drupal/field_group:3.x-dev#eb2167b7
This solved it for me.

If I run this update
composer require 'drupal/field_group:3.x-dev@dev'
Is it the same as the one above?

My whole site was WSOD and I am still a little shocked.

@nils.destoop
The file has appeared, but it is empty.
I am attaching a working template file.

On another site, I did the drupal updates a few minutes ago.
I ran
composer require 'drupal/field_group:3.x-dev@dev'
The site was not WSOD, but the edit screens where I use fieldgroup were unusable.

This fixed it
composer require drupal/field_group:3.x-dev#eb2167b7

The template content is now also in the repo.

Tests are green again, so marking this as fixed

Automatically closed - issue fixed for 2 weeks with no activity.