someone told me my

someone told me my site has two titles per page, and duplicate titles and that these are hidden. He says the second titles are at line 82. As I do not understand this I will need help even knowing what kind of problem it is. I never added any H1s. He mentioned a Yoast misconfiguration but I do not know if that relates to this issue or something else he mentioned. I have the conversation between him and me, and a code screenshot. Thanks.