404 not implemented

[tempral]

if I try to visit a not existent page (or router destination), the div content just display the value "undefined"

[tempral]

would be better to set up an apache config with an .htacces in the homepage folder?

RewriteEngine On RewriteCond %{HTTPS} off [OR] RewriteCond %{HTTP_HOST} ^www. [NC] RewriteCond %{HTTP_HOST} ^(?:www.)?(.+)$ [NC] RewriteRule ^ https://%1%{REQUEST_URI} [L,NE,R=301] RewriteCond %{REQUEST_FILENAME} -s [OR] RewriteCond %{REQUEST_FILENAME} -l [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^.$ - [NC,L] RewriteRule ^(.) /index.html [NC,L] </IfModule>

[tempral]

I guess that in the github pages hosting there is no possibilities to use the .htaccess, but is possible in the most common and simplest hosting plans

[tempral]

because your workaround of using a dynamic redirect from the 404 isn't a best practise solution, especially for search engine optimization