(Solved) Apache 2.4 multiple subdomain with fallback folder

Question

I want to have a default folder when the folder does not exist in the VirtualDocumentRoot, I have this code:

<VirtualHost *:80>
    ServerAlias *.development

    UseCanonicalName Off
    VirtualDocumentRoot /usr/local/apache2/sites/htdocs/subdomains/%1/public_html

    # Something like
    VirtualDocumentRootFallback /usr/local/apache2/sites/htdocs/subdomains/default/public_html

</VirtualHost>

ErrorDocument 404 does not work for me because I need it to be a folder.

Edit (Solved): I write a Apache module based on mod_vhost_alias: mod_vhost_alias_fallback