About This File
First I wanna say Thanks very much this person s0h2x for amazing work called "pretty_actionbar". This is for WoW 3.3.5a.
link: https://github.com/s0h2x/pretty_actionbar
What I'm was do? I'm extract one file from Dragonflight called "uiactionbar.blp" and upload here.
Instruction:
1.Download "pretty_actionbar" created by s0h2x https://github.com/s0h2x/pretty_actionbar
2.Download file upload by me (oroginal file creator Blizzard)
3.Extract file in "X:\WoW 3.3.5a\Interface\AddOns\pretty_actionbar\assets"