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 ('ef9561d05c062a879b2766591435b787', -1, 1714361881, 1714361881, '127788eb', -4, 0)

Line : 158
File : sessions.php