checkboxmanager.js getSelectedModIds fails when checkbox not found

[x-iy]

getSelectedModIds

There can be a situation where const checkbox = document.getElementById(sectionBoxes[sectionNumber][i].boxId); can return null resulting in error and blocking.

This can be fixed by checking for null:

const checkbox = document.getElementById(sectionBoxes[sectionNumber][i].boxId);
if (checkbox && checkbox.checked) {
    moduleIds.push(sectionBoxes[sectionNumber][i].moduleId);
}

[PhMemmel]

Hi, thank you for raising this. Can you please provide an example in which cases this problem arises?

[x-iy]

I can't provide a specific example right now, but the issue occurred with a custom module which is in development. I will provide steps to recreate when I have time.