Hello, J.Hong.
Sorry for late message.
It looks like this website has maybe forbidden external IP-addresses outside China because it just says "403: Invaild request".
Can you upload the picture on other websites instead like imgur.com or postimages.org?
Also upload full coordinates from bugs.txt and game.log.txt in Documents -> Euro Truck Simulator.
Check again about how to report a bug correctly:
https://www.promods.net/viewtopic.php?f=29&t=939