Hi @achmadfandisantosohq, welcome to Thunkable! 
Please be sure to check our post about How to ask Great Questions v2.0 while making posts like this–the more information we can have, the better we’ll be able to assist you!
What exactly is the bug you think you are seeing here? Is there a problem with the image itself? The image size? It is hard to help if we do not know what the issue is.