It will be located as part of the tablesorter plugin - you may need to be a global “find” operation to get the exact class, or if you locate the element in developer tools it will show you the file and line number.
already done suggested steps before add this post and result fails that’s why added a post from your answer no hint for me or above is not a exact solution of my post.
Well if it’s being output in the HTML but cannot be found anywhere in the source code, then I think the find operation probably isn’t working correctly