Received message from GWT(GSC): Errors in hreflang tags on site.com.
We found the hreflang tags on your site, but a few of them have technical problems. Take a look at our hreflang report to see which of your hreflang tags have issues. Until you fix these tag errors, your website will not benefit from additional language or region targeting.
By link from mail See hreflang errors i get this page:
But my site isn't multi-language! When I click on any line from GWT(GSC) errors list i get links to external multi-language site which linked from my site! Looks like Google bot associate this external domain with my site. How to fix?