phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './contacta_contactados/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 ('86896d44ca05b6bbdb065ade91048d0a', -1, 1406754826, 1406754826, '36c4c39e', -1, 0, 0)

Line : 187
File : sessions.php