Based on the Moveable documentation (found here: https://github.com/daybrush/moveable/blob/0.13.4/handbook/handbook.md#toc-group), you can create a group of moveable elements by passing an array to the target property. However, doing so in vue-moveable after initialization throws the following error:

Uncaught (in promise) TypeError: Cannot read property 'addEventListener' of undefined

I've confirmed that this occurs no matter the type of elements. It's present with both div and svg. Additionally, if the array has only a single element in it, this error does not occur.

Demo:
https://codesandbox.io/s/vue-moveable-group-problem-9r6sf?fontsize=14&hidenavigation=1&theme=dark

Vue-Moveable version: 1.4.0