The error message is saying that your page has no twitter:text value, which is a mandatory field.
Looking at your page it seems that you currently have two sets of cards tags - probably because you’re using 2 Wordpress plugins. They conflict, because one is specifying a summary card, and the other one is specifying summary large image.
You should disable one of the plugins, and consult the documentation to check how to ensure that a description is applied. We cannot support individual Wordpress plugins on our forums.