Olympus Theme – How to fix Aside Menu icons not showing

In my case, the menu icons were present, but not showing on the menu.

What solved this problem for me was editing, or re-selecting the menu icon and then saving it by executing the following steps

Go to Menus

Select the aside menu to edit

Click a menu item to expand

Then look at the Icon Option.

If an icon is indicated, but not there, click on the x to remove the icon

Then click change icon

Select the Custom Upload Tab (that’s where I found the Olympus Theme icons)

Select the icon you would like to  use

Save the menu

You may have to experiment a bit with the steps, but this is essentially what worked for me.