phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpBB/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d85eb9b0e6d97fb54da6251b12b5f196', -1, 1503113734, 1503113734, '369ef59d', -1, 0, 0)

Line : 187
File : sessions.php