Hi Everyone,
I've just upgraded moodle to 4.0.4. I use the latest Lamba theme (compatible with 4.0). However, when I go to existing assignments from previous years I get the following Exception. Does anyone know how best to resolve.
Exception - Argument 1 passed to mod_assign\output\renderer::render_assign_header() must be an instance of mod_assign\output\assign_header, instance of assign_header given, called in [dirroot]/lib/outputrenderers.php on line 491
