Error Occured While sending Get/Post Request using C#

While sending Get/Post Request using C# at times we are getting exception errors like below mentioned.

1) One or more errors occurred. (A task was canceled.)

2) One or more errors occurred. (Error while copying content to a stream.)

Even if we increase the time out the error persists. This issues are particular to C# while works fine in Node.Js.  Without Proxy, HTTPClient