Page Not Found (404)

Looks like the page you requested doesn't exist.

postgres=# SELECT page FROM website WHERE url = '/docs/pgadmin4/8.13/release_notes_1_0.html';
 page
------
(0 rows)

Here are pages with the same name from other versions of the documentation that are available:

postgres=# SELECT version, title FROM docs WHERE page = 'release_notes_1_0.html';
 version     |                    title
-------------+--------------------------------------------
 9.14        | Version 1.0 — pgAdmin 4 9.14 documentation
 9.13        | Version 1.0 — pgAdmin 4 9.13 documentation
 9.12        | Version 1.0 — pgAdmin 4 9.12 documentation
 8.14        | Version 1.0 — pgAdmin 4 8.14 documentation
 7.8         | Version 1.0 — pgAdmin 4 7.8 documentation
 6.21        | Version 1.0 — pgAdmin 4 6.21 documentation
 Development | Version 1.0 — pgAdmin 4 9.14 documentation
(7 rows)