Requirements for htpasswd (apache2-utils) not specified

[intelemetry]

https://wiki.apache.org/httpd/PasswordBasicAuth

On debian based system you need: sudo apt-get install apache2-utils in order to execute $ htpasswd -c ~/.htpasswd vxcage which is required for the stanza:

AuthUserFile "/path/to/users"

for the apache virtual host file.