ConsoleError

jquery.min.js:2 jQuery.Deferred exception: $(...).stellar is not a function TypeError: $(...).stellar is not a function
    at HTMLDocument.<anonymous> (http://localhost/website/papers/js/main.js:10:12)
    at e (https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js:2:29453)
    at t (https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js:2:29755) undefined

jquery.min.js:2 Uncaught TypeError: $(...).stellar is not a function
    at HTMLDocument.<anonymous> (main.js:10)
    at e (jquery.min.js:2)
    at t (jquery.min.js:2)

js?key=AIzaSyBVWaKrjvy3MaE7SQ74_uJiULgl1JY0H2s&sensor=false:107 Uncaught TypeError: Cannot read property 'firstChild' of null
    at Object._.Zg (js?key=AIzaSyBVWaKrjvy3MaE7SQ74_uJiULgl1JY0H2s&sensor=false:107)
    at new dh (js?key=AIzaSyBVWaKrjvy3MaE7SQ74_uJiULgl1JY0H2s&sensor=false:108)
    at init (google-map.js:44)