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 ('4cd34441d6d19ae4b3069fcd329d0d52', -1, 1713421348, 1713421348, '03915e82', 2, 0, 0)

Line : 187
File : sessions.php