Add robots.txt and sitemap.xml. Here some useful info. robots.txt [Introduction to robots.txt](https://support.google.com/webmasters/answer/6062608) [Create a robots.txt file](https://support.google.com/webmasters/answer/6062596) [What is a robots.txt](https://moz.com/learn/seo/robotstxt) sitemap [Learn about sitemaps](https://support.google.com/webmasters/answer/156184)
Add robots.txt and sitemap.xml. Here some useful info.
robots.txt
Introduction to robots.txt
Create a robots.txt file
What is a robots.txt
sitemap
Learn about sitemaps