Regenerate Thumbnail Error

Hi,

Thumbnails in Media page not displaying. Tried to use Regenerate Thumbnails Plugin but keep receiving the following error:

function(){return f&&(c&&!b&&(h=f.length-1,g.push(c)),function d(b){n.each(b,function(b,c){n.isFunction(c)?a.unique&&j.has(c)||f.push(c):c&&c.length&&”string”!==n.type(c)&&d(c)})}(arguments),c&&!b&&i()),this}

Please advise how to solve this.

Thanks!