change "broken/notfound" image not working

RobinsonHu

Could someone help me with right use of "onerror" while I return images?
Here is my example:
http://live.datatables.net/cayafasi/1/edit

it still shows the default "broken/notfound" image instead of the one I defined. Why?

RobinsonHu

I found my problem.

onerror="this.src="https://via.placeholder.com/140x100.png"

to

onerror=this.src="https://via.placeholder.com/140x100.png"