Fatal error while opening courses in Snap theme

[amita435]

Fatal error: Declaration of theme_snap\output\core\course_renderer::course_section_cm_completion($course, &$completioninfo, cm_info $mod, $displayoptions = []) must be compatible with core_course_renderer::course_section_cm_completion() in /var/www/moodle_1click/theme/snap/classes/output/core/course_renderer.php on line 29

The error comes while debugging.

Please help. New to Moodle.

[EdTechSavvy]

I am having the same problem with Snap theme PHP 8.1 Moodle version 4.3.

Snap is using a method (core_course_renderer::course_section_cm_completion) that has been removed from core Moodle in 4.3+
From Moodle documentation:

=== 4.3 ===

• The core_course_renderer::course_section_cm_completion method has been removed, and can no longer be used
• External function core_course_external::get_course_contents() now returns a new field activitybadge with the data to display
  the activity badge when the module implements it.
• prepare_new_moduleinfo_data() now accepts a parameter "suffix" that will be added to the name of the completion rules.
• The method core_course_bulk_activity_completion_renderer:: edit_default_completion() has been deprecated and will be removed.
• The core_course\output\activity_information output class has been deprecated. Use core_course\output\activity_completion
  and core_course\output\activity_dates instead.

Alongside with that, the following methods have been deprecated too:

• core_course_renderer::render_activity_information()
• renderer_base::activity_information()

[lvidgen]

Yes, this is broken and needs to be fixed by the dev team. Snap 4.3 will not work with Moodle 4.3 as reported in Issue 284. The latest working Moodle version that you can use this theme with is Moodle 4.1