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 ('399f0d89500dae0e0583c87b386e0e64', -1, 1713310184, 1713310184, '03859357', -4, 0, 0)

Line : 187
File : sessions.php