phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './nwforum_1/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 ('89b63f697fb7f427922c5070f381dd53', -1, 1558469504, 1558469504, '36a72ff8', 12, 0, 0)

Line : 187
File : sessions.php