Certification Course assignment in uipath

I am doing Calculate Client Security Hash assignment to get certification. I am getting the following error as shown below.

SHA1_Online/SHA1online_GetHashCode.xaml: None of the overload groups have all their required/optional activity arguments configured.
Please guide me


welcome to uipath community

Make sure that all the activities used in your sequence have arguments or variables passed to them in the property panel of each activiity

Cheers @AravindS