I am trying to create my own custom error 500 page. I originally had errors going over the 1,500,000 character limit. I fixed this and it showed my custom page in the preview page. I tried again and now i get a “Status code 400 received while fetching template from https://www-dev.vivint.com/error/500.html”
Any URL I use i get errors. I cant find what this error means. I know the page is accessible. The page itself is not error 400. https://www-dev.vivint.com/error/500.html
Any help appreciated any help as to why I get the page with the status code instead of a preview of my page.