[Theme: Harmonic] Child theme can't load header image

After I created a Harmonic child theme using the Child Theme Configurator plugin (Lilaea Media) the header image stop to load despite of it’s configuration on customise pane.

Original theme:

<img src="https://zhineng.com.br/wp-content/uploads/2014/10/cropped-crane_flying_in_the_sky-wide.jpg" style="position: absolute; margin: 0px; padding: 0px; border: none; width: 1271px; height: 408.975px; max-height: none; max-width: none; z-index: -999999; left: 0px; top: -4.48750000000001px;">

Child theme:

<div id="custom-header" style="height: 400px;">
		</div>

https://www.zhineng.com.br/blog

Thanks!