php fatal error:  call to undefined function course_get_url() in /home/fred/www/repositories/im/moodle/lib/classes/event/course_viewed.php on line 81, referer: https://fred.moodle.local/im/report/loglive/index.php

php stack trace:, referer: https://fred.moodle.local/im/report/loglive/index.php

php   1. {main}() /home/fred/www/repositories/im/moodle/report/loglive/loglive_ajax.php:0, referer: https://fred.moodle.local/im/report/loglive/index.php

php   2. plugin_renderer_base->render() /home/fred/www/repositories/im/moodle/report/loglive/loglive_ajax.php:50, referer: https://fred.moodle.local/im/report/loglive/index.php

php   3. report_loglive_renderer_ajax->render_report_loglive_renderable() /home/fred/www/repositories/im/moodle/lib/outputrenderers.php:221, referer: https://fred.moodle.local/im/report/loglive/index.php

php   4. report_loglive_table_log_ajax->out() /home/fred/www/repositories/im/moodle/report/loglive/classes/renderer_ajax.php:46, referer: https://fred.moodle.local/im/report/loglive/index.php

php   5. flexible_table->format_row() /home/fred/www/repositories/im/moodle/report/loglive/classes/table_log_ajax.php:53, referer: https://fred.moodle.local/im/report/loglive/index.php

php   6. report_loglive_table_log->col_eventname() /home/fred/www/repositories/im/moodle/lib/tablelib.php:760, referer: https://fred.moodle.local/im/report/loglive/index.php

php   7. core\\event\\course_viewed->get_url() /home/fred/www/repositories/im/moodle/report/loglive/classes/table_log.php:240, referer: https://fred.moodle.local/im/report/loglive/index.php