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 ('2e419f3d512014a40217c9171146b5ff', -1, 1398025765, 1398025765, '36c614d7', 2, 0, 0)

Line : 189
File : sessions.php