Yeah, I saw that error too and I have opened a tracker for it , however, the skin should have reloaded. Be sure to run the Integrity Check tool and clear the cache.
This is fixed, you'll want to go to your ACP > Core > Marketplace > Tools > Reload Modules Or Skins ( /marketplace/system_update/all=1 ) and reload the jrBeatSlinger2 skin.
BeatSlinger2 is now in the marketplace, you can upgrad/download from your ACP. You'll want to make sure and run the Integrity Check Tool and Reset Caches. The Dark mode check box can be found in the skin settings under the General tab.
You may also need to clear your browser cache. Usually, ctrl+r will do it when you are on your webpage. Or you can clear the cache from your browser settings.
Actually, If you just uploaded an image from the skins image tab, then that will not replace the logo. What you will want to do is find the actual logo image in the list of images, and click the browse button to the right of it to change the logo image.
I believe there are two logo images that will need to be replaced for the Celebrity skin.