Dev mode - corousel not shown

[hr015]

Hi,
I have trouble with this addon. It works fine when I deploy it for production (package -Pproduction), but when I use it in development mode with springboot, I do not see the carousel. Instead, I see all the slides together in a column.
Could you help me with this?
Thank you!

[paodb]

Hello @hr015, if you're using springboot make sure to add this value: com.flowingcode.vaadin.addons to the vaadin.whitelisted-packages property in your application.properties file. More information about whitelisted configuration here.