Practice Tool

Was wantinf to practice Jhin ult on a live target so i asked around on my friends list and found someone to help.Found one willing and I invited her. When i started i got an error saying couldnt start it. No other info so im wondering whats up? I can do it with regular bots but i cant controll them. Cant level them up or make them change personality. (Like how tekken has it set up i mean) Makes them not realy a good practice target.

tldr. tf is up with practice tool with friends.