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 ('26a13407a66f2a9efbede43c4dc9c6ae', -1, 1397835506, 1397835506, '3651502e', -1, 0, 0)

Line : 189
File : sessions.php