JCH Optimize Joomla Access forbidden! to css/js files?

Question

Joomla

The problem of such a plan, I installed the JCH Optimize Joomla plugin, it glues js / css and transfers them to the footer, etc. In general, it does what it takes to fix it in google insight "Remove the JavaScript and CSS code that blocks the display of the top of the page"
He then in theory, everything is fine, but in the console I see that css and js are not loaded at all, those files
that
it
generates I see:
Access forbidden!
That is, the file cannot be read, as I understand it, due to the server settings. Where to fix it? Or what to look for? I understand that, for example, in the same httacess, but what exactly should I look for?