phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './twisty_phpb1/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 ('056dc3c3e6c25ad78225d74c6e453ef7', -1, 1513567546, 1513567546, '36a33d42', 8, 0, 0)

Line : 187
File : sessions.php