CSRF in Ckeditor with barryvdh's Elfinder

Im trying to upload images through ckeditor with the barryvdh's Elfinder Laravel component but the moment I press the "Send it to the server" image upload button, at the Network console I get the well Known CSRF error, Im using:

 <script type="text/javascript" charset="utf-8">
        // Helper function to get parameters from the query string.
        function getUrlParam(paramName) {
            var reParam = new RegExp('(?:[\?&]|&)' + paramName + '=([^&]+)', 'i') ;
            var match = window.location.search.match(reParam) ;

            return (match && match.length > 1) ? match[1] : '' ;
        }

        $().ready(function() {
            var funcNum = getUrlParam('CKEditorFuncNum');

            var elf = $('#elfinder').elfinder({
                // set your elFinder options here
                <?php if($locale){ ?>
                    lang: '<?= $locale ?>', // locale
                <?php } ?>
                customData: { 
                    _token: '<?= csrf_token() ?>'
                },
                url: '<?= route("elfinder.connector") ?>',  // connector URL
                getFileCallback : function(file) {
                    window.opener.CKEDITOR.tools.callFunction(funcNum, file.url);
                    window.close();
                }
            }).elfinder('instance');
        });
    </script> // ckeditor4.php

elfinder/ckeditor  | elfinder.ckeditor | Barryvdh\Elfinder ElfinderController@showCKeditor4   //routes for getting the elfinder

<script type="text/javascript"> 
    CKEDITOR.replace( 'messageArea', {
        filebrowserImageUploadUrl : '/elfinder/ckeditor',

        height : 300
    } );
</script> // at index.blade.php

There is a solution in https://github.com/barryvdh/laravel-elfinder/issues/100 which is to disable CSRF for certain routes, but I think it is dangerous. So I want your opinion how to Resolve this issue.