Http errors 404 warnings in google webmaster tools

Hello

After doing the mobile friendly test I was taken to google webmaster tool where sitemap http errors 404 are indicated. In fact there are 2 warnings on these errors in google webmaster tool sitemap.

I will attach screenshots of these errors in an email to be sent separately.

Can help to resolve the warnings and errors highlighted by google webmaster tool regarding sitemap http errors 404 please?

Thanks in advance for your help and support.

Best regards.

Benjamin