my CSS doesnt work after i implemented multiselect-combobox-addon

after i implemented this addon, my css is getting ignored. i dont know how to fix it, i even removed the addon and still my css is ignored

I think the addon wasn’t compatible with your version of Vaadin and break the frontend (css and javascript).
When you remove the addon from maven/gradle and refresh it in your ide, you can clean the frontend and re-run your application.

Which version of Vaadin are you using?

hello, im using vaadin14

the addon should work with vaadin14, right?

ohh apparently i have to use the version 3.0.2 instead of 4.0.0 rc2 ?