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 ('39c5e1c46ec5447cfeed1c11b73a8ddf', -1, 1715056107, 1715056107, '03864c33', -7, 0, 0)

Line : 189
File : sessions.php