Университет международного бизнеса

× 调试信息：
Error code: Unable to find discussion with id 449
$a contents:

× 堆栈跟踪：

• line 216 of /mod/forum/classes/local/builders/exported_posts.php: moodle_exception thrown
• line ? of unknownfile: call to mod_forum\local\builders\exported_posts->mod_forum\local\builders\{closure}()
• line 237 of /mod/forum/classes/local/builders/exported_posts.php: call to array_reduce()
• line 137 of /mod/forum/classes/local/builders/exported_posts.php: call to mod_forum\local\builders\exported_posts->group_posts_by_discussion()
• line 95 of /mod/forum/classes/local/renderers/posts.php: call to mod_forum\local\builders\exported_posts->build()
• line 212 of /mod/forum/classes/local/renderers/discussion.php: call to mod_forum\local\renderers\posts->render()
• line 337 of /mod/forum/discuss.php: call to mod_forum\local\renderers\discussion->render()