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 ('5ef7031c2c5a0f9091a71ce3aa9a3e73', -1, 1425308152, 1425308152, '3210adc0', -12, 0, 0)

Line : 187
File : sessions.php