phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './cpdb/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 ('21986c69b459084668c510ed374d4489', -1, 1455413645, 1455413645, '3213005a', -5000, 0, 0)

Line : 189
File : sessions.php