Good evening I can't play online with a friend of mine because I can't enter his world and he can't enter mine. This thing only ever happens with the same friend. On the other hand, if my friend and I are invited by a third person into his world, we both enter.
It happens to us on PlayStation 4 in Minecraft Bedrockedition

It gives me the error impossible to connect to the world even trying to enter and exit several times.

how can i solve?
thank you

Greetings