This is a conflict issue between Uikit2 from Warp 7 based themes and Uikit3 for Extra add-ons.
I can create a custom extra-addons version for use using custom PREFIX to avoild the conflict issue, more info https://getuikit.com/docs/avoiding-conflicts#custom-prefix
The solution is changing the prefix uk- from uikit3 to custom prefix like wt-
