phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO magpies_phpBB_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ab74c9e791ec6cf28697ce75a8d7d893', -1, 1656801959, 1656801959, '03ee7d4c', 18, 0, 0)

Line : 282
File : sessions.php