In The Force Awakens and The Last Jedi, it was mentioned that Luke Skywalker took on students and started teaching them the ways of the Force before Kylo Ren killed them all and left Luke for dead. Specifically in The Last Jedi, we see a few shots of the place where this happened. It looks like some sort of Jedi Temple.
The thing is, I don't know where all this happened, and I can't find any information on it. I know in Legends, Luke rebuilt the Jedi Order on Yavin 4; is there any indication of where this training was going on in the new canon?