flag problems

Hi how can i print out the flag icons on my widget.
can you please help me.
Table is comming up and correctly but the flags doesnt exist even they are in the folder.
also how we can modify to make the shorter the table.
and how we can
Efektif Alış
Banknote Buying
Efektif Satış
Banknote Selling
apply this to our exchange rates.

https://ww.wp.xz.cn/plugins/turkish-lira-exchange-rates/