"Unable to connect to world" issue PS4

When I try to join my world, it takes around 3-5 minutes before telling me "Unable to connect to world". I've been playing on the world for 7 years now, and I've completed so many thing and I'm afraid I can't play My first ever survival world anymore. My Minecraft is updated to the most recent version. Is there anyway I can fix this problem? It's been going on for 3 months now