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 ('120fa4814bbecb59d49be7aa0d6d250c', -1, 1416712853, 1416712853, '36a1dca0', -1, 0, 0)

Line : 187
File : sessions.php