Will you publish 24 Vaadin version?
I've tested version 3.4.2 against vaadin 24 and it worked.
If you are using it in a spring application, you might need to change application.properties and add 'de.f0rce.ace' to the 'vaadin.whitelisted-packages' property, e.g.:
vaadin.whitelisted-packages=com.vaadin,de.f0rce.ace