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 ('708a512d2a0c50f8e87f0376a08241b3', -1, 1713961526, 1713961526, '12769172', -4, 0, 0)

Line : 187
File : sessions.php