facing issue with the unexpected null value issue

Actions & Logic

i am facing with unexpected null value error when I load the homepage, I have an action setup in onpage load and this fetches the list and also I have another query on listview which is inside the homepage, the action I setup in the onpageload for homepage is as shown below


Landing page is different from which we get the list of items which are shown in the home page so I have added condition is set or null which is working fine as verified in the debug mode, I could see that list which I am using in the onpage load condition for "is set or not" is properly updated as seen in the debug mode, but the issue is when I land in homepage

in

What have you tried so far?

Tried existing community answers

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