So I'm currently working on a ASP.NET project for a client and the client constantly receives this error. The problem is that when I run the project on my side, nothing happens. I searched and I've found a lot of solutions for this error, but I can't really try a solution till I manage to reproduce this on my side . The question is: what can be the cause for this? I also checked https://support.microsoft.com/en-us/help/320439/prb-error-executing-child-request-error-message-when-you-use-server-tr but it didn't really help me. I'm a beginner in all of this so if someone could clearly explain to me why this is happening I'll be really grateful!
EDIT This is the line of code that triggers the error:
HttpContext.Current.Server.Execute(VirtualPathUtility.ToAbsolute("~/Folder1/MyPage.aspx?xkey=" + logGuid.ToString()), _writer);