Update LeanOutputReader.py
Update LeanOutputReader.py

Add try-except controls to ensure successful report creation when backtest result is incomplete. Prevents issues popping up with None types for Total Performance and Portfolio Statistics.

jameschch/Lean,StefanoRaggi/Lean,JKarathiya/Lean,jameschch/Lean,StefanoRaggi/Lean,jameschch/Lean,QuantConnect/Lean,JKarathiya/Lean,QuantConnect/Lean,AlexCatarino/Lean,jameschch/Lean,AlexCatarino/Lean,QuantConnect/Lean,JKarathiya/Lean,QuantConnect/Lean,JKarathiya/Lean,StefanoRaggi/Lean,jameschch/Lean,StefanoRaggi/Lean,AlexCatarino/Lean,AlexCatarino/Lean,StefanoRaggi/Lean