phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 144 Table './mysqld4eeffce980fb369848cf9fed19/phpbb_sessions' is marked as crashed and last (automatic?) repair failed

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('c049850abbc2f1567259135c3609603d', -1, 1422504870, 1422504870, '3693e06e', 0, 0)

Line : 158
File : /home/httpd/vhosts/mcseforum.com/httpdocs/includes/sessions.php