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 ('92b88d05af749cdf6cf3b61ddaef5426', -1, 1425467578, 1425467578, '3652bdf8', -12, 0, 0)

Line : 187
File : sessions.php