No quotes

src/freedombone-image-mesh

       echo 'Categories=Application'; } > "/home/$MY_USERNAME/Desktop/routing.desktop"
 
     # set permissions
-    chmod +x "/home/$MY_USERNAME/Desktop/*.desktop"
+    chmod +x /home/$MY_USERNAME/Desktop/*.desktop
     chown "${MY_USERNAME}":"${MY_USERNAME}" "/home/$MY_USERNAME/Desktop/"*
     chown "${MY_USERNAME}":"${MY_USERNAME}" "/home/$MY_USERNAME/.config"
     chown -R "${MY_USERNAME}":"${MY_USERNAME}" "/home/$MY_USERNAME/.config/tox"