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 ('d5f0e1d7ea3e5aa2393212b576e1f1e7', -1, 1715915798, 1715915798, '038b50d8', -9, 0)

Line : 158
File : sessions.php