Solved DataFileSystem ReadObject error

Hello. Im having trouble saving / loading custom player data.
The end problem is that whenever I saved data, next time I try to load them it fails with a NullReferenceException on the following line :

Code:

yds = Interface.Oxide.DataFileSystem?.ReadObject<YattaDatas>("Equity_PlayersDatas");

Here's the loading code :

Code:

        void LoadYattaData() {
            Puts("LOADING CUSTOM DATA ...");
            Puts("1a");
            if (Interface.Oxide.DataFileSystem == null) return;
            Puts("1b");
            loadDataTimer.Destroy();
            Puts("1c");
            timer.Repeat(5f, -1, () => { AutoSaveData(); });
            Puts("1d");
            if (yds == null) return;
            Puts("1e");
            yds = Interface.Oxide.DataFileSystem?.ReadObject<YattaDatas>("Equity_PlayersDatas");
            Puts("1e");
            if (yds.data != null) {
                Puts("No data");
                playersData = yds.data;
            } else {
                Puts("Data found");
                playersData = new Dictionary<ulong, YattaData>();
            }
            Puts("CUSTOM DATA READY");
        }

The error always happens after "1e" if I saved non-empty data on a previous server session. If I save data and there is nothing to actually save, next session will load without an error.

Here are my classes. Im not sure using a containing class (YattaDatas holding the dictionnary) is necessary, I ended up doing that during various tests to fix the problem.

Code:

        public class YattaDatas {
            public Dictionary<ulong,YattaData> data;
        }
     
        public class YattaData {
            public bool bearWarned = false;
            public bool wandStop = false;
            public ulong id = 0;
            public string wandMode = "";            public YattaData(BasePlayer bp) {
                id = bp.userID;
                wandMode = "none";
            }
        }

Searched the forums for clues but Im running out of ideas to try to fix it. Any help welcome.

Edit: Tried to switch the whole thing to DynamicConfigFile system, I have the same problem : if the data is empty its ok, if I save something and restart server it fails.

 

Try this:

Code:

public class YattaDatas {
            public Dictionary<ulong,YattaData> data = new Dictionary<ulong, YattaData>();
        }
YattaDatas yds; // If you have it then forget about this line.

 

Didnt change the result

I tried going from scratch, no problem with loading / saving a string, so I guess it has something to do with the type of data / structure im trying to save. Still investigating.

EDIT: FINALLY FIXED (i think) !
Im not sure how, tough. I just cleaned lots of stuff and it fell in place somehow. Sorry I cant be of anymore help if someone comes into a similar issue