phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('eea246f3c20df6ae0d786bf6fcbb1ad6', -1, 1715303831, 1715303831, '0387c5c9', -8, 0, 0)

Line : 189
File : sessions.php