W3 validator errors

hello guys
can you help me pleaseeee?
i test my website in w3 validator and this site show me a lot of errors.
this link is: https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.meroeh.com%2F
my website name is: https://www.meroeh.com
so, i understand these errors but i can not find the file which has that errors for editing.
can you help me to find one of this file for editing and solve error to understand to solve these errors?