Now working cool.
followed your above procedure.
Make sure using acme.sh for letsencrypt with running 'sh /script/acme.sh-installer'.
Try 'sh /script/fixweb; sh /script/restart-web'.
and then
i removed the old letsensrypt and again installed it.
https://desktophdwallpaper.comthank you so much.
how to install memcache on server?
yum reinstall memcached -y
i tried this and it's installed but i am unable to enable and unable to find its location on server.