phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './alois_foro/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 ('1d4f9c77e9f5ec1f81f2523234ed11b9', -1, 1397738417, 1397738417, '1715177e', -4, 0, 0)

Line : 187
File : sessions.php