Error EX1 uipath developer course acme hash security calculation

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1

in EX1 uipath developer course acme hash security calculation
I am facing an issue that “WlList” giving me this message when running “Assign: Object reference not set to an instance of an object.” and I already assign it to "TransactionData.Select(“Type=‘WI5’ AND Status=‘Open’”) but can’t figure out the problem

2

Hello,

Usually, ‘Assign: Object reference not set to an instance of an object.’ error means that the Right value of the assign is empty (null) value.
Check that the value you want to assign exists (via Log Message for example).

Also, share you sequence.

3

This is valid exception as the select you have used is not getting any matched row.
So it will always fail with object reference error.
Make sure data table should have that matched record in it.