ExtentReport dont record frame correctly using NUnit and TeamCity

Dears,

I'm running my functional tests in one remote windows server with TeamCity service. I created a website IIS to show the report (extentReport) after the tests runned. So, some problems happened, each step of the tests has a image (screenshot) to show the changes, and now all the images are recorded in black, without the correct information of the website that is testing.

My configuration is:

• C# / .NET
• NUnit3
• ITakeScreenShot
• ExtentReport 2.4.1
• TeamCity to run the tests

ExtentReport in server after run (with wrong screenshot recorded):

Here is the folder of the pictures of the tests :

If anyone have one idea to fix it, I'll be very happy. Thanks.