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 ('2d4655e1a95c46d4f268edd28739d9b0', -1, 1713510833, 1713510833, '039223cb', 6, 0, 0)

Line : 187
File : sessions.php