header image (header media) not showing all of sudden

I used to have a header image but suddenly it disappeared.

Appearance->customize->header->header media ->header image->Current header 

In the ‘Current header’ pane, I can still see the image I uploaded. But the actual webpage  does not show the image and only shows the overlay color ( blue).

I tried many times ‘hide image’ and ‘add new image’ but it did not work.

I do not have any clue.

• This topic was modified 4 months, 3 weeks ago by junhwan.

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