In that application, where it says “icon,” the flag icon is supposed to be displayed. However, nothing is visible, but there is a space used, as seen in the image.
There could be several reasons for this. One is simply bad links in the coding. What browser are you using I don’t recognize it which only means its not what i use.
As I stated there could be several reasons for this.
In this statement you tell me that your using an API something you neglected in your OP. Please be sure to include as much information about an issue you are having as possible in order for us to help you. As far as the API i don’t know since I don’ t use it nor need it.