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 ('aa3453e42fd91886432b08fa3c3a4e34', -1, 1713823293, 1713823293, '2cc961e0', -4, 0, 0)

Line : 187
File : sessions.php