Okay, I tried that fix where you put the broken profile in your local world and put it back in the world you were playing in and it worked!
However not long after fixing that bug, I encountered a new bug which seems to be the more common one, it's about the drones. ERR NCSimple_Serializer (ch=0)" & "EXC Memory stream is not expendable
I saw a post about this so I tried to get rid of my drone by placing it in my inventory and leaving it in a storage box. I no longer have a drone but I was able to play after. Although I encountered that error again later on. But I just re-joined and things seem to be okay again. Now I feel like that error will just pop up randomly when I'm playing. Not sure what else to do. Plus we encountered another different bug that's quest related.
When we went to the location of one of our T1 fetch quest, my friend who's the owner of the quest, cannot see the exclamation point BUT she can see the prompt to start it. However when she was pressing 'E' to start it, nothing is happening. We decided to skip it and go to another quest, a T4 fetch & clear. When we started this new one, my friends' white river supplies chest locations are broken. One of them told me that their white river supplies was 2.6km from where we are and my other friend told me that his white river supplies was at 0.0km and he eventually found it from a loot bag that a zombie in the POI dropped. While doing this quest, this is where I got that NCSimple_Serializer error once again.
My friend whose white river supplies was 2.6km away, figured that the game is pointing at the white river supplies from the previous T1 fetch quest. It might've bugged as we tried to start another different quest. But as she was on her way there, the text guide which is on the top right of the screen, disappeared. Then we thought that it maybe did that because she was too far from the quest area.
That was the last straw (or draw? I forgot the saying) for us. Since it's Day 98 in our world we've decided to just fight our last Blood Moon Horde and leave that world. We'll just come back if and when this crapstorm of progress-impeding bugs have been fixed.