The error “Cannot tween a null target” usually happens when a JavaScript animation (often GSAP or similar libraries) is trying to target an element that doesn’t exist or hasn’t loaded yet. Since the issue appears when questions are added, it could be that the script responsible for pagination (next/submit buttons) isn’t properly detecting dynamically generated elements.
I’d recommend checking your browser console to see which file triggers the error and confirm that the button elements exist in the DOM before the tween function runs. You might need to wrap the script inside a document ready function or reinitialize it after the quiz loads the questions. Also, check for conflicts between your theme and any quiz-related JS plugins.
I’ve seen similar front-end conflicts on content-based platforms like manoknapulaapp.com, where proper script loading order and element targeting made a big difference in fixing UI-related issues.
Start by disabling other plugins one by one and test again — most of the time it’s either a JS conflict or missing selector issue.
