The icons in the vertical panel have disappeared

I logged in today on blender and see that transforms have missing icons. Do you have idea how to fix it?

Hi, all Blender addon icons are in the same datablock. If 1 addon breaks the datablock it is broken for all other addons.

Solution:

  1. check system console log file for errors or warning related to libpng or other image libraries
  2. find addon by message in log and temporarily disable it to convince that problem in ZenUV is solved