phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpBB/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 ('fb2b233d44bd4f5285c30e9324fba234', -1, 1441346819, 1441346819, '365a850a', 8, 0, 0)

Line : 187
File : sessions.php