TypeError: Cannot read properties of null (reading 'addEventListener')

[Claudio]

I have this javascript exception when use MultiColumnComboBox (but sometime also with ComboBox / DropDown).

If i continue debugging it go without issue, but it break always on component load.

 

[Hristian Stefanov]

Hi Claudio,

We have an article that covers this type of error: JavaScript Errors. Please go through it and let me know if the issue persists.

Kind Regards,

Hristian