Error with apis

Hi teacher,

First of all, thanks for your course. Im having a error in your MERN AMAZONA REACT tutorial, i think it was something with the APIs, i dont know why in some you put in the .env …URI_ATLAS, but i cant do that becouse i dont have the other code(like localhost//amazona).

[apcode language=”vb”] this is the error that show my console. The page works till point Video42, when i try to implement Video43 it dont work.

react-dom.development.js:86 Warning: validateDOMNesting(...): <a> cannot appear as a descendant of <a>.
    at a
    at http://localhost:3000/static/js/bundle.js:16430:7
    at http://localhost:3000/static/js/bundle.js:29683:5
    at http://localhost:3000/static/js/bundle.js:28276:5
    at div
    at Dropdown (http://localhost:3000/static/js/bundle.js:16665:5)
    at http://localhost:3000/static/js/bundle.js:27942:70
    at http://localhost:3000/static/js/bundle.js:29588:5
    at a
    at LinkWithRef (http://localhost:3000/static/js/bundle.js:58927:7)
    at div
    at http://localhost:3000/static/js/bundle.js:17746:11
    at http://localhost:3000/static/js/bundle.js:29518:70
    at div
    at Transition (http://localhost:3000/static/js/bundle.js:61059:30)
    at http://localhost:3000/static/js/bundle.js:30648:5
    at http://localhost:3000/static/js/bundle.js:27759:5
    at http://localhost:3000/static/js/bundle.js:29886:5
    at div
    at http://localhost:3000/static/js/bundle.js:27845:5
    at nav
    at http://localhost:3000/static/js/bundle.js:29771:70
    at header
    at div
    at Router (http://localhost:3000/static/js/bundle.js:60636:15)
    at BrowserRouter (http://localhost:3000/static/js/bundle.js:58833:5)
    at App (http://localhost:3000/static/js/bundle.js:95:56)
    at PayPalScriptProvider (http://localhost:3000/static/js/bundle.js:8333:15)
    at r (http://localhost:3000/static/js/bundle.js:57273:21)
    at StoreProvider (http://localhost:3000/static/js/bundle.js:774:78)

[/apcode]

Thanks for your time