This is the button when pressed will show a popup screen:


My problem is when the button pressed popup screen show but didn't show correct data and can't click Confirm Check Out. 

Check this video error: https://drive.google.com/file/d/1c24sDUxDwzdHK2GF4q6aCv_6sF5trIp2/view?usp=sharing

Thanks

Solution

You’re sending NullIdentifier() as input to your poppy, só on its preparation it tries to grab the data with no identifier.

Solution

have you tried debug the prep of the popup? or does the error appear before the popup open?

João Melo wrote:

You’re sending NullIdentifier() as input to your poppy, só on its preparation it tries to grab the data with no identifier.

lol, that's my fault. Sorry guys

Thanks for the reply.