phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('31b5ded5f9276ad1d0888f7b88ec87bc', -1, 1714607525, 1714607525, '12da465d', -9, 0)

Line : 158
File : sessions.php