UiPath Activity Creator not working!

Hello all, default generated package from UiPath Activity Creator is not working.
Throwing error -
Can anybody help me?

The error looks like the variable associated with the activity has no value in it or has null value in it
kindly check once with that variable passed like whether it has any value in it ornot

Cheers @AnkitRawat

Its not the case @Palaniyappan. All fields have legit values placed.