ya it’s weird I can’t figure out why it does the error sometimes and other times it does as you describe. if you try typing in the url into your browser, you may run into the 404 error I describe. i just played with it using different combinations of typing or not typing “https://” and “www” as well as the “/” at the very end of the url, and sometimes got the error and sometimes didn’t.
I will try what you suggest with stripping down the Widgets and see what happens.