cannot view icons

Flow
1

I am just created a sample app with Vaadin 14. I used the card layout view. When I run the app I cannot see the shares, likes and comments icons.
Any clues? Thanks in advance.

2

I created a sample app using Vaadin 18 yesterday and with Intellij, and no problem. What IDE are you using?

3

Thanks for responding Ted. I am using Eclipse.

I did the same with V14. On first pass I could see the IronIcons with no problem. But after I executed a production build and now they are not visible. I can see the frontend scripts in the build artifact. However to resolve I used the Icon component instead of the IronIcon component, now all is well.