Set language not working select2

jquery-select2 select2
Matheus picture Matheus · Mar 5, 2016 · Viewed 28.6k times · Source 
<select data-placeholder="Select or type" data-minlength="2" multiple = "multiple" name='arrAval' id='listAval' class="js-basic-multiple form-control" required>

So here is the issue:

As the documentation says I should be able to set language for this component:

$(".js-basic-multiple").select2({
        language: "language-wanted"
    });

It's returning "no results found" no matter which language I set. Just to be clear, as in https://select2.github.io/examples.html#matcher it returns "No se encontraron resultados" for 'language:"es"'

Answer

Matheus picture Matheus · Mar 10, 2016 
<script src="libs/select2-4.0.2-rc.1/dist/js/i18n/<here-goes-language>.js"></script>

The include above was missing as Keving Brown said. As the example quoted in the question the file for spanish would be "es.js"

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