Replacing title below the image

Hi,

Is there a filter that replaces the widget title below the image?
I followed the instructions from this post: https://ww.wp.xz.cn/support/topic/plugin-image-widget-move-title-under-image?replies=6
but all the widget images disappeared after I added that code in my theme folder=(

https://ww.wp.xz.cn/plugins/image-widget/