Not sure if its bug or not since i dont play evoker much but i cant see any spells on evoker bar.

I have no idea what buttons Evokers should have, or what spells should be on them.

maybe something like -at least for start
Blessing of Bronze
Dragonrage

https://www.wowhead.com/guide/classes/evoker/devastation/overview-pve-dps