phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './forumcr/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 ('fe755b859a071c8a85cb196b1f5501fc', -1, 1425009503, 1425009503, '36cd6ac0', 37, 0, 0)

Line : 187
File : sessions.php