[INSTALLATION] integrated w/ engintron, but does not work

[gthb1]

Tried to integrate with engintron, but when testing, it does not return the testing output as described in the manual install step 12.
I put the two includes of step 10 into
/etc/nginx/utilities/https_vhosts.php
right beneath
include common_https.conf;
which is in the server section.
Test nginx conf (nginx -t) comes out good (ok/successful).
What needs to be done to make it work?