I tried using the Treemap in Qilk Sense and it has the same error when there are negative values.
The data i am displaying represents profit so the target audience is more interested in the profit. The loss has been summarized in another chart and a pivot table.
Using absolute is out of the equation, hence, I am looking to either show only the profit, or completely not show the pie chart at all. I chose the latter but it is showing me the negative value error.
Is there a way for the app to not display that error?
As you've worked out its not an error rather Qlik handling of inappropriate values for the type of chart you are using.
My recommendation would be to use another chart appropriate for showing losses as well as profit for the complete picture or in the measure use an IF statement to exclude the negative values either by nulling the value then excluding dimensions with null value or setting it to zero as others have posted above.