Im having troubles with a website made in Angular 5. Even though i have H1 and H2 headings, in every SEO checker appears this error: Your page does not contain any H1 headings
You need to use angular universal. Without it, all html (h1, h2, content, ...) is added dynamically client side, which means that search engines and other bots cannot see them
https://github.com/angular/angular-cli/wiki/stories-universal-rendering