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 ('7a8c6ee7d74dfa8df88921e0ff3c395b', -1, 1715178406, 1715178406, '031196a3', -7, 0, 0)

Line : 189
File : sessions.php