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 ('82041013c5a6fe699409756b8563e33f', -1, 1425400242, 1425400242, '36ccb320', -12, 0, 0)

Line : 187
File : sessions.php