Trying to make this app work as intended

[Rishles69@]

I need a small help with a map drawing app. So I was making a GPS map thing using a display and stuff from https://www.elecfreaks.com/blog/post/arduino-gps-map-navigation-system.html . (You can get a "softwareGPS.zip" file from the bottom of the page I posted. The problem is with the app included in the zip file "maptile.exe". The app works as intended like on on the website but when I tried to download the drawn map in the exe, it gave a Chinese error. So I translated it and it says download error <number>. I was just trying to draw a state from India (kerala) and it's a smaller data than the whole India. And many files are missing on the export folder. I need to finish this within 5 days. Hope anyone can help with this. Thanks 👍