Well, it is pretty self explanatory, Renata was added to league officially and this program can't handle matches that she exists, heres the full log:
2022-02-20 01:22:46.785 Traceback (most recent call last):
File "C:\Users\hbnat\AppData\Roaming\Python\Python39\site-packages\streamlit\script_runner.py", line 379, in _run_script
exec(code, module.__dict__)
File "C:\Users\hbnat\Desktop\ML-Prediction-LoL-master\src\app.py", line 86, in <module>
data = get_current_match_prediction(summoner_name, region)
File "C:\Users\hbnat\Desktop\ML-Prediction-LoL-master\.\src\predict.py", line 127, in get_current_match_prediction
prediction = predict_match(match, region1)
File "C:\Users\hbnat\Desktop\ML-Prediction-LoL-master\.\src\predict.py", line 54, in predict_match
mastery_list = api_calls.get_masteries(summonerName, region)["mastery"]
File "C:\Users\hbnat\Desktop\ML-Prediction-LoL-master\.\src\api_calls\api_calls.py", line 233, in get_masteries
championId = int(championIds[data[2]])
KeyError: 'Renata Glasc'