In the browser dev tool, can you please click on console and share the errors there?
These screenshots were very helpful. Thank you @nasa0007 !
The crash is likely caused by mixed HTTP / HTTPS issues. So your admin is HTTPS, but the editor is trying to load the chunk via HTTP.
Plugins like Really Simple SSL can help resolve this kind of misconfiguration.
Please explain it to me in detail, I am not able to explain it.
Your story has mixed content issues as you can see in your console errors. You should really make sure that the HTTP version redirects to HTTPS. I suggest you install a plugin like Really Simple SSL to perform this migration. This will most likely solve your issues with the editor crashing.
