No DNS resolving on Debian after installed resolvconf

I have a VPS and if _resolvconf_, is installed, no DNS (address) will be resolving and I don't knows how can I fix it. I must reinstall the system. Ping, apt and many more doesn't work with addresses but with IP it works.

I removed entries with _resolvconf_ and after running the script, resolving is possible.

I don't know why problem is present.