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 ('05cee506ad246881d1d1a70d0563238e', -1, 1481381840, 1481381840, '36ccc647', 13, 0, 0)

Line : 187
File : sessions.php