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 ('bd70172b9514899e35255aeb233e88eb', -1, 1425528121, 1425528121, '369f83ef', -12, 0, 0)

Line : 187
File : sessions.php