XGBoostError - Invalid cast, from Null to Array

#1

Hello,
I have built an ML model with XGboost, and I save my file as:

model.save_model( ‘default_class_model.json’)

Then, I upload the model as:

model_xgb_2 = xgb.Booster()
model_xgb_2.load_model( ‘default_class_model.json’)

However, I am launching this code on Streamlit and I get the following error:

XGBoostError: [13:38:10] C:\Users\Administrator\workspace\xgboost-win64_release_1.1.0\include\xgboost/json.h:65: Invalid cast, from Null to Array

Anny idea why?

#2

Make sure to use the identical version of XGBoost when saving and loading the model on two different machines.

#3

You were right! I was deploying with an old version of xgboost. Thank you!

#4

Quick note, it’s supported to load older model (backward compatibility), but not newer model (not forward compatible)