phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './private_phpb1/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 ('085d6eb64be19343b020a6362b4e7065', -1, 1397663933, 1397663933, '43ca04e1', 25, 0, 0)

Line : 187
File : sessions.php