OK, that is a clue
the sudo commmand gives more privaledges/permissions i.e root access
so I think there is a permissions problem when you try to run it via the icon
it might mean that your Mac Account is not set as administrator?
or
try
going to your Mac Preferences, security and privacy, → privacy, then select full disk access
click on the lock to unlock at the bottom
then use + to add the weatherdisplay app in the applications folder
try that