Text too small to read
This is an Error shown when the new website is launched and submitted sitemap in Google Search Console.
1) It can be easily validated just by increasing the size of the font in the theme panel.
2) Removing cache if you have enabled then go to Mobile usability section in google search console and click validate.
3) If it still shows error try after few hours
4) email will be received from google master that validation is started.
5) The error can be solved if font size increased from 16x to 18x.