VERY Useful but need a little upgrade

The problem wouldn’t arise if you’re assigning medium to large images. In my case, I used small-sized icons 50×50 pixels as a category thumbnail, and WordPress threw a notice “Notice: image_resize is deprecated since version 3.5! Use wp_get_image_editor() instead.” in wp-admin/edit-tags.php?taxonomy=category page

I solved the notice by using the recommended wp_get_image_editor() API as follows. Comment-out the image_resize() API, and add two lines of $new = wp_get_image_editor(…….);
$new->resize( $detail[‘size’][0], $detail[‘size’][1], $detail[‘size’][2] );

Location: taxonomy-images.php line 176

/* Attempt to create a new downsized version of the original image.
			$new = image_resize( $path,
				$detail['size'][0],
				$detail['size'][1],
				$detail['size'][2]
				);*/

			$new = wp_get_image_editor( $path ); // Return an implementation that extends <tt>WP_Image_Editor</tt>

			/* Image creation successful. Generate and cache image metadata. Return url. */
			if ( ! is_wp_error( $new ) ) {
		    $new->resize( $detail['size'][0], $detail['size'][1], $detail['size'][2] );
				$meta = wp_generate_attachment_metadata( $id, $path );
				wp_update_attachment_metadata( $id, $meta );
				$img = image_get_intermediate_size( $id, $detail['name'] );
				if ( isset( $img['url'] ) ) {
					return $img['url'];
				}
			}