Hello,
We’re doing some exploratory research with model training that gives the best accuracy for our use case. We are trying to crank up the size of the model as high as it will go, but on Windows, we get an error similar to the below with large models.
This issue might not be filled out initially with sufficient detail… new to this tool and machine learning in general, so please go easy on me. 
Wishing you all immaculate vibes.
----------------------------- Captured stderr call -----------------------------
stderr:
ERROR C:\Users\<PATH REDACTED>\XGBoostAlgo.cpp:XGBoostInitialize():33: [10:35:59] C:\Users\<PATH REDACTED>\xgboost\src\common\json.cc:385: Expecting: "L", got: "\0", around character position: 681998470
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0
~~~~~~~^~~~~~~~~No error
terminate called after throwing an instance of 'std::runtime_error'
what(): [10:35:59] C:\Users\<PATH REDACTED>\xgboost\src\common\json.cc:385: Expecting: "L", got: "\0", around character position: 681998470
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0
~~~~~~~^~~~~~~~~