Thanks but that didnt work either.
But i was able to fix it. I just downloaded the newer versions of
apktool and
apktool installer and then followed the guide as usual. Everything seemed to work fine, no problems with recompiling or anything. I havent actually installed the SystemUI.apk on my phone yet, but i will try it later when i have some time and ill let you know if it works.
You should probably update the links for apktool in the OP with the ones i have above. The ones you provided are pretty outdated.