Hi,
Unfortunately, we are still looking into this issue, however, there is a quick solution here by uploading custom images in its place.
In the tools portal, click on the plugin, then choose, edit plugin. To add the new images click on folder symbol. Attached you will find the appropriate icon images. If you desire a better design you can find more icons here https://www.flaticon.com. The best icon size would be 64x64 pixels in PNG format.
Kind regards,
