Bug: theme/trema/classes/output/core_renderer.php: Error thrown

[francarballo]

Prerequisites

• [X] I'm reporting the issue to the correct repository.
• [X] I am running the latest version of this plugin (if not, please upgrade first).
• [X] I checked the README.md and Wiki documentation but did not find my answer.
• [X] I searched to make sure that this issue had not already been reported.
• [X] I have, or I know someone who has, the ability and willingness to test the fix on a Moodle LMS-based site.
• [X] I am submitting no more than one bug report per issue ticket (please do not submit multiple bugs in one issue ticket).
• [X] I understand that support is provided by volunteer(s).

What happened?

Hi. I experience this error, and the moodle crashes. I'm running moodle 4.0

Error Exception - Class 'theme_trema\output\filter_manager' not found

Debug info: Error code: generalexceptionmessage

Stack trace: line 231 of /theme/trema/classes/output/core_renderer.php: Error thrown line 219 of /lib/mustache/src/Mustache/Context.php: call to theme_trema\output\core_renderer->standard_head_html() line 138 of /lib/mustache/src/Mustache/Context.php: call to Mustache_Context->findVariableInStack() line 31 of /var/www/moodledata_cw/localcache/mustache/1728573378/trema/Mustache_eb4b45ecbe4f60a84b8a56326203be46.php: call to Mustache_Context->findDot() line 13 of /var/www/moodledata_cw/localcache/mustache/1728573378/trema/__Mustache_555d939f0237008e266f5d67ff9839d8.php: call to Mustache_eb4b45ecbe4f60a84b8a56326203be46->renderInternal() line 67 of /lib/mustache/src/Mustache/Template.php: call to Mustache_555d939f0237008e266f5d67ff9839d8->renderInternal() line 208 of /lib/outputrenderers.php: call to Mustache_Template->render() line 126 of /theme/trema/layout/drawers.php: call to renderer_base->render_from_template() line 1477 of /lib/outputrenderers.php: call to include() line 1403 of /lib/outputrenderers.php: call to core_renderer->render_page_layout() line 1989 of /lib/setuplib.php: call to core_renderer->header() line 86 of /user/preferences.php: call to bootstrap_renderer->call()

What do you think should have happened?

I expected the theme to work properly.

Steps to reproduce

1) I installed the theme as I usually do, from the moodle installer. 2) The installation was completed successfully. 3) When I go to the theme selection and choose Trema, moodle crashes and only the error is displayed. 4) The only way to get out of this error is if I previously had a window open with my profile so I could choose another theme.

Screenshots

No response

Moodle version

4.0.7

Installed Moodle UI Language packs.

• [ ] English only
• [ ] One or more other languages/regional dialects (specify below)
• [ ] Other

If other language(s), please specify

No response

Workaround

No response

Additional information

No response

System information

Client Device type: (e.g. Desktop, iPhone or iPad, Android phone or tablet, Other - specify) Client Operating System: (e.g. Windows, Linux, Mac OS, Android, iOS, Other - specify) Client Web Browser: (e.g. Chrome, Edge, Firefox, Safari, Safe Exam Browser, Moodle Mobile App) Server Operating System: (e.g. Windows, Linux, Mac OS, Other - specify) Server Webserver: (e.g. Apache, Nginx, IIS, Other - specify) Server PHP: (e.g. 7.4, 8.0, 8.1, 8.2, 8.3, Other - specify)

Code of Conduct

• [X] I have read and agree to the project's code of conduct.

[michael-milette]

This issue was recently fixed. It is specific to Moodle 4.0. Please use the dev branch for 4.0 until it is merged into the main branch.

[sbt-sysadmin]

Same issue as OP using Moodle 4.3.4, Moodle 4.4 & Moodle 4.5.

Tried dev branch.

Tried full uninstall of Trema and reinstall.

Details:

Exception - Class "theme_trema\output\filter_manager" not found Debug info: Error code: generalexceptionmessage Stack trace: line 231 of /theme/trema/classes/output/core_renderer.php: Error thrown line 219 of /lib/mustache/src/Mustache/Context.php: call to theme_trema\output\core_renderer->standard_head_html() line 138 of /lib/mustache/src/Mustache/Context.php: call to Mustache_Context->findVariableInStack() line 31 of /var/moodledata/localcache/mustache/1729018503/trema/Mustache_73560842f9d6c5bc337558df4f13b989.php: call to Mustache_Context->findDot() line 13 of /var/moodledata/localcache/mustache/1729018503/trema/Mustache_bc67ed95d6d37c685879434f38adb23f.php: call to __Mustache_73560842f9d6c5bc337558df4f13b989->renderInternal() line 67 of /lib/mustache/src/Mustache/Template.php: call to __Mustache_bc67ed95d6d37c685879434f38adb23f->renderInternal() line 192 of /lib/classes/output/renderer_base.php: call to Mustache_Template->render() line 131 of /theme/trema/layout/drawers.php: call to core\output\renderer_base->render_from_template() line 972 of /lib/classes/output/core_renderer.php: call to include() line 888 of /lib/classes/output/core_renderer.php: call to core\output\core_renderer->render_page_layout() line 72 of /admin/themeselector.php: call to core\output\core_renderer->header()