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 ('afaab3f426c1753deced0fb6e406f904', -1, 1713522226, 1713522226, '12bfe458', -8, 0, 0)

Line : 187
File : sessions.php