Hi,
I gone through your issue details, Before awarding project to anyone please check and follow below IIS steps, If it works. I had face same issue previously.
The solution for me was to install the “Static Content” support for IIS.
>>Go to “Turn Windows features on or off”
>>Select Internet Information Services
>>Select World Wide Web Services
>>And check Static Content
Thanks and let me know if it works for you.
Regards
vericent