Unhandled Runtime Error TypeError: Cannot read properties of null (reading 'clientHeight')

[firstpersoncode]

I'm using this library in my NextJS project, and all the animated elements inside a scrolled div.
So I set scrollableParentSelector to the respective scrolled div.

Then I got this error:

Unhandled Runtime Error
TypeError: Cannot read properties of null (reading 'clientHeight')

Call Stack
ScrollAnimation.getVisibility
node_modules/react-animate-on-scroll/dist/scrollAnimation.min.js (127:0)
ScrollAnimation.handleScroll
node_modules/react-animate-on-scroll/dist/scrollAnimation.min.js (230:0)
invokeFunc
node_modules/lodash.throttle/index.js (160:0)
leadingEdge
node_modules/lodash.throttle/index.js (170:0)
HTMLDivElement.debounced
node_modules/lodash.throttle/index.js (235:0)

Any idea what's going on exactly?