How to set up htaccess when adding opencart to a subfolder?

Question

htaccess

I copied the site and the database, uploaded it to the subpack and corrected the configs. Added RewriteBase /papka to htaccess subfolders . When going to mysite.com/papka/ gives a copy of the main site (ccs and html have already been corrected for the papka version ). At the same time, mysite.com/papka/admin works correctly.
Tell me, good people)