How to understand this problem when i use "forEachUielement" in web

Hello , i don’t know how to understand this error information “Error HRESULT E_FAIL has been returned from a call to a COM component.”
image

Hi @z1185399190

The below thread might be useful for you,

Hope it helps!!

Thank you very much ! But i met a another problem. I didn’t add any columns , but it warns this .It found unidentified columns