Cannot edit or open widgets in my primairy widget area!

Hello….. first I like your pluginn, it’s great…..and will do the job i’m looking for.

My question is, after I install your pluginn, I cannot edit or open my widget in the primairy widget area!

I get this message in console …..

“wp-content/plugins/widget-options/assets/css/jqueryui/1.11.4/themes/ui-lightness/images/ui-bg_highlight-soft_100_eeeeee_1x100.png” (404 not found)

wp-admin/load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-draggable,jquery-ui-slider,jquery-touch-pun&load%5B%5D=ch,iris,wp-color-picker,utils,jquery-ui-sortable,underscore,backbone,plupload&ver=4.6.1

It seems there is missing a image i think, maybe its not related to your pluginn…but the problem i have started after I installed your pluginn!!!!