This is an issue brought up on the curseforge page I'm just rewriting it here so it's tracked and resolved properly.

A solution discovered by Minstril43 on curseforge involves not creating "ArtFrame2" if ElvUI is active and skinning the pet battle UI.
See workaround here: https://www.curseforge.com/wow/addons/tdbattlepetscript?comment=89

Duplicate of #50.

hi，it didn't work，can u upload your changed file：petbattle.lua，i amnot sure i changed it right