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 ('02ec7183053c3c68b15dd2fda73fd69e', -1, 1425639577, 1425639577, '36c55e1e', -12, 0, 0)

Line : 187
File : sessions.php