How to correctly transfer the rewrite rule from .htaccess to virtual-host?

Question

Apache HTTP Server

Good afternoon, colleagues.
Tell me about this issue: there was a need to transfer the rewrite rule from .htaccess to the virtual-host settings.
Added to virtual-host:
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.test\.dev$
RewriteRule ^(.*)$ www.test.dev/$1 [R=permanent,QSA,L]
, everything is the same, as it was in .htaccess. But now at the end of the url with a redirect it turns out like this:
www.test.dev - that is, with two slashes at the end.
The whole brain broke already with these two slashes.
Tell me who has met this.