SyntaxError: expected expression, got '' in AJAX call

Hello

I'm having an error in an AJAX call in my JavaScript. For some reason, it does not get to the function in my Controller and gives the following error: SyntaxError: expected expression, got '.

This function is called as soon as I click a Modal button. It serves to create the data of a DataTable already created.

function EWBuild() {
  $.ajax({
      url: urlCreateBH,
      data: { year: $('#findYearBH').val(), inputType: 1, month: $('#monthEW').val() },
      dataType: "script",
      type: 'POST',
      success: function (result) {
          CreateTableEW(result);
      }
   })
}