Ok. Noted. Can you add more context. They can only fight in certain contexts.
i know you cannot make fights between fighters that are in the same gym but everytime i make a fight between two of my fighters in different gyms and i get to fight that glitch pops up
Can you describe the exact steps now there are a few routes to making fights?
Saves me going through them all 
not quite sure what u mean have my fighter in my mexican gym fight someone from my american gym and this has happened when i have two different fighters in ly stable fight eachother when i get to the fight that glitch will pop up and it only happens when two fighters from my stable are fighting eachother
i just clicked on make fight the single fight and matched them up with eachother
What version?
that should be fixed as it will cause an issue…