before instaling some plugins it was working file. but i installed 5,6 plugins after that one course header showning following error. other course headers are normal.
- line 230 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()
- line 1197 of /lib/blocklib.php: call to block_base->get_content_for_output()
- line 1249 of /lib/blocklib.php: call to block_manager->create_block_contents()
- line 374 of /lib/blocklib.php: call to block_manager->ensure_content_created()
- line 3839 of /lib/outputrenderers.php: call to block_manager->region_has_content()
- line 40 of /theme/moove/layout/columns2.php: call to core_renderer->blocks()
- line 1162 of /lib/outputrenderers.php: call to include()
- line 1092 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
- line 244 of /course/view.php: call to core_renderer->header()