Specified index is out of range or child at index is null. Do not call this method if VisualChildrenCount returns zero, indicating that the Visual has no children. Parameter name: index Actual value was 1.

Hi,

Whenever I access my .NET application windows application, each functionality works fine except the refresh button in it on certain page, and error comes as -

Specified index is out of range or child at index is null. Do not call this method if VisualChildrenCount returns zero, indicating that the Visual has no children.
Parameter name: index
Actual value was 1.

Till now we gathered from research that it is related to .NET version but then, we tested the same from .NET 4.0 to 4.7. And this occurs only on some of our servers and working correctly on others.

Any help will highly be appreciated.

Regards