phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './pmasterphpbb/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 ('c76fa53dcef377a834e63b8eb9a29e8f', -1, 1500570358, 1500570358, '36a160ef', -4, 0, 0)

Line : 187
File : sessions.php