@jlundie Thanks for your reply. I did this and found out that a security plugin caused this problem. I was able to finalize the configuration now.
Hi Patrick,
The screenshot: https://ibb.co/f0L5Bzt
I just tried disabling Lazy Loading again and emptied the cache and it seems to work again now. I see the Lazy Loading is still a beta-version. I hope you find a way to fix this as I would like to use this function. It saves about 14 MB on the initial loading of the website. Is there a way to still use Lazy Loading for me at this moment?