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 ('b1e60d1685cca3a3e748881ac9473868', -1, 1713530992, 1713530992, '127428b1', 5, 0, 0)

Line : 187
File : sessions.php