Can't train new pet

Hi there!

I am a Hunter and I've already done the mission that allows me to train new pets using "Tame Pet". But like two days ago I lose my pet during a combat and I decided to train a new one, so i just aproached to a wild animal and I used "Tame Pet" but then the game says that I already have a pet. So I called the pet (it was supossed that it has to be alive) but the game says that I have no pet.

So I can't train new pet because "I already have a pet" but at the same time "I don't have a pet" WTF?. What can I do guys?

Thanks.