phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : Invalid object name 'SESSIONS_TABLE'.

SELECT u.*, s.* FROM SESSIONS_TABLE s, phpbb_users u WHERE s.session_id = '4e13adc87f1eeb0b169db028473559cc' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php