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 ('c495d066c5d9c1942f5238d0ae5314ed', -1, 1713535660, 1713535660, '12bf58f9', -7, 0, 0)

Line : 187
File : sessions.php