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 ('2d7acf76fa47f96eb179d7e610b5cb21', -1, 1713484497, 1713484497, '0395fc25', 3, 0, 0)

Line : 187
File : sessions.php