A JavaScript error occurred in the main process

When I try to close the Beyond Labz app on Mac, it gives me error. I had installed a free trial version and then activated it the next day with a purchsed license.

Uncaught Exception:
TypeError: Cannot read property ‘minimize’ of null
at BrowserWindow.handleClose (/Applications/Beyond Labz.app/Contents/Resources/app.asar/index.js:1085:45)
at BrowserWindow.emit (events.js:203:13)

Yes, that error will occur whenever you close the program with the X, instead of the Exit arrow. Just use the arrow and the program will close fully with no problems!