Error reading from database 
Debug info: SQLState: 42S22<br>
Error Code: 207<br>
Message: [Microsoft][SQL Server Native Client 10.0][SQL Server]Invalid column name 'timecreated'.<br>

SELECT q.* FROM (SELECT TOP 9223372036854775806 ROW_NUMBER() OVER(ORDER BY timecreated DESC) AS sqlsrvrownumber, q.* FROM (SELECT u.id, u.picture, u.firstname, u.lastname, u.imagealt, u.email, c.id AS cid, c.content AS ccontent, c.format AS cformat, c.timecreated AS ctimecreated
FROM mdl_comments c
JOIN mdl_user u ON u.id = c.userid
WHERE c.contextid = '2' AND c.commentarea = N'page_comments' AND c.itemid = '0'
) AS q) AS q WHERE q.sqlsrvrownumber > 0 AND q.sqlsrvrownumber <= 15
[array (
0 => '2',
1 => 'page_comments',
2 => 0,
)]
Stack trace: 
line 391 of \lib\dml\moodle_database.php: dml_read_exception thrown
line 252 of \lib\dml\sqlsrv_native_moodle_database.php: call to moodle_database->query_end()
line 363 of \lib\dml\sqlsrv_native_moodle_database.php: call to sqlsrv_native_moodle_database->query_end()
line 761 of \lib\dml\sqlsrv_native_moodle_database.php: call to sqlsrv_native_moodle_database->do_query()
line 417 of \comment\lib.php: call to sqlsrv_native_moodle_database->get_recordset_sql()
line 593 of \comment\lib.php: call to comment->get_comments()
line 342 of \comment\lib.php: call to comment->print_comments()
line 54 of \blocks\comments\block_comments.php: call to comment->output()
line 280 of \blocks\moodleblock.class.php: call to block_comments->get_content()
line 232 of \blocks\moodleblock.class.php: call to block_base->formatted_contents()
line 895 of \lib\blocklib.php: call to block_base->get_content_for_output()
line 947 of \lib\blocklib.php: call to block_manager->create_block_contents()
line 342 of \lib\blocklib.php: call to block_manager->ensure_content_created()
line 4 of \theme\serenity\layout\frontpage.php: call to block_manager->region_has_content()
line 647 of \lib\outputrenderers.php: call to include()
line 605 of \lib\outputrenderers.php: call to core_renderer->render_page_layout()
line ? of unknownfile: call to core_renderer->header()
line 1229 of \lib\setuplib.php: call to call_user_func_array()
line 89 of \index.php: call to bootstrap_renderer->__call()
line 89 of \index.php: call to bootstrap_renderer->header()