Please help! Hard to debug error in flutter.

Hi i have a problem i dont really know how to attack, I have build a fairly simple desktop app. It uses graphql to query data from a database. It shows the fetch data as a list, and that pretty much it. It works fine both in debug mode and when I build the .exe file.
But! when I try to run the .exe file on another pc, it fails to fetch the data, but the app runs fine(it dossent crash). It just comes with a message: fail to fetch data!
Im having a hard time trying to debug the exe file. So how do I attack this issue? any suggestions. Im kinda stuck.
please help:-)