Personal I have the following problem:
I'm creating a website in Wordpress and I want it when I publish his posts on Facebook that thumbnail of the image of the post appears, but in its place is appearing the logo of the site. I do not know how to solve this, so I ask for your help.
Please ask for simple explanations, as I do not have much control over this.
Below is the error you are giving there in the Facebook debugger:
