Uncaught TypeError: a(...).parents(...).andSelf is not a

Question

Im getting this error on page load :

 

Uncaught TypeError: a(...).parents(...).andSelf is not a function

at Object.parse (jquery.validate.unobtrusive.min.js:19)

at HTMLDocument.<anonymous> (jquery.validate.unobtrusive.min.js:19)

at mightThrow (jquery-3.1.1.js:3570)

at process (jquery-3.1.1.js:3638)

 

 

In the jquery.validate.unobtrusive.min file  the error occurs is shown below:

, parse: function (b) { var c = a(b).parents("form").andSelf().add(a(b).find("form")).filter("form"); 

 

thank you in adavance for the help