Vaadin 7.7 - Icons 2.0.0 - Euro icon not showing

I’m using VaadinIcons 2.0.0 with 7.7 framework.
I use the euro € icon but it shows ad a square with the E927 code.
The € icon is defined in the the icon set.
What’s wrong ?
Tks
Tullio

Nobody can help ?

Another icon not showing correctly ACCADEMY_CUP.
Why ?