phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './allonssortir/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 ('9402fe3ec92b9fe2e059396a5abe7ed0', -1, 1425257723, 1425257723, '36a61870', -12, 0, 0)

Line : 187
File : sessions.php