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 ('7c44c1e87cc015d6306179675f4aa504', -1, 1713445329, 1713445329, '2cd295cd', -8, 0, 0)

Line : 187
File : sessions.php