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 ('2af43759d979d700d24844ec8f2a2b30', -1, 1713551545, 1713551545, '0389d580', -4, 0, 0)

Line : 187
File : sessions.php