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, session_admin) VALUES ('460f1ec73e721f0f5192c1a02954ca16', -1, 1714066231, 1714066231, '12d9c227', -10, 0, 0)

Line : 187
File : sessions.php