Srapping Data Problem

When i Scrapping data from web, sometimes its worked but sometimes like this

what is the problem ?

and how to resolved this

Hello @gilang_ramadhan123

The error is happening in the Lookup Datatable activity. So I hope you are getting the value from the web page and then trying to do the lookup. So try to add additional delay before to the Data scrapping and then execute again.

Also, confirm data is available in the web page always during the execution.