Rocket League far, far away trophy?

I have a problem, I'm collecting all the trophies at Rocket League at Ps4. So far I have all but the trophy: Far, far away… Here the task is to drive a total of 50km and I have now added up all the distances traveled and come to 56km but did not get the trophy. Does anyone know if this is a bug and or how I can get this trophy or fix the bug?

If you had to try offline matches, your distances may not be saved online! (Can't be, but I'm convinced of)