[Plugin: WP Web Scraper] Problem with wpws-content directory

I uploaded from a preview version and got errors in my pages right away.

I solved these by creating two directories which did not exist:

wpws-content/http-cache
wpws-content/modules

I also created a blank file here wpws-content/modules/1.php, as this code was looking for *.php files there:

foreach (glob(WP_PLUGIN_DIR.'/wp-web-scrapper/wpws-content/modules/*.php') as $mod) {

What should permissions be on http-cache?

thanks.