I have a problem with Yii grid view. for some reason it does not seem to load correctly, even though the script is included (i can see it in the source code).
This is the header part of the HTML:

<script src=fileadmin/static/js/jquery-1.8.3.min.js type=text/javascript></script>

<script src=/module/public/assets/80c0553/gridview/jquery.yiigridview.js type=text/javascript></script>

<script type=text/javascript>jQuery(function($) {

 jQuery('#grid-downloads').yiiGridView({'ajaxUpdate':['grid-downloads'],'ajaxVar':'ajax','pagerClass':'pager','loadingClass':'grid-view-loading','filterClass':'filters','tableClass':'def-table','selectableRows':1,'enableHistory':false,'updateSelector':'{page}, {sort}','filterSelector':'{filter}','pageVar':'page'}); 

 });

</script>

I get the Error: TypeError: jQuery(...).yiiGridView is not a function

Any ideas where the problem may lie?