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 ('04bc6b54dcf0e7986251a74e40a9ef7e', -1, 1713915466, 1713915466, '0a020003', 1, 0, 0)

Line : 187
File : sessions.php