power query formula error: cannot apply operator <

The power query formula shown below is given me the error shown below.

A sample of the data where Completed Paste Due <3 Days is displaying "error" is shown below as well.

Task Due Date and Task Finished Date are both of type date.

Any idea how to fix this error?

if [Completed Past Due]=1 and ([Task Finished Date]-[Task Due Date])>=0 and ([Task Finished Date]-[Task Due Date])<3 then 1 else 0

Power Query Error

Data

Thank you.