Generatepress page hero logo 2x issue

Dear all,

I am using generatepress 3.0.3 and GP Premium 2.0.0-rc.2. I am using header elements on various pages of my site. These header elements have a custom site logo.

Pages without the header element have the normal logo like this:

<div class="site-logo">
	<a href="#" title="title" rel="home">
		<img  class="header-image is-logo-image" alt="title" src="https://...normal_header.png" title="title" width="2000" height="300" />
	</a>
</div>

The pages with custom header element and with custom logo have this additional code:

<div class="site-logo page-hero-logo">
	<a href="#" title="title" rel="home">
		<img  class="header-image is-logo-image" alt="title" src="https://...custom_header.png" title="title" srcset="...custom_header.png 1x,  2x" width="2000" height="300" />
	</a>
</div>

The 'problem' comes with the 2x in srcset. My company runs a linkchecker https://github.com/linkchecker/linkchecker and the linkchecker gives an alarm:

# sec
- Result Error: 404 Not Found...
- Parent URL: https://www.url.de/
- Real URL: https://www.url.de/2x

Is this a real issue or is the linkchecker at fault? Regards