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 ('a95a01a7176c2f1ce7aaaa842dbca46d', -1, 1424996763, 1424996763, '36a7b3d2', -1, 0, 0)

Line : 187
File : sessions.php