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 ('7b6393e4e94cb14d934a55f7347c6a14', -1, 1713515835, 1713515835, '03804f58', -4, 0, 0)

Line : 187
File : sessions.php