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 ('14bfe505e42a07e8a9c4203a0f0f0a3b', -1, 1714711887, 1714711887, '12da267d', -9, 0)

Line : 158
File : sessions.php