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 ('d33016c2ce8212847648424523c70aeb', -1, 1713910622, 1713910622, '030e06c2', -4, 0, 0)

Line : 187
File : sessions.php