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 ('fae24d7e4e66d732f7dd783bbebf3106', -1, 1713417217, 1713417217, '0391b789', -1, 0, 0)

Line : 187
File : sessions.php