Autosave crashs client

[Hikoh]

Launcher Version: 1.0.3.4

Operating System: windows vista

Java Version: unknown

Antivirus Program:

Description of Problem:

I set the aut save for 30 mins, and sure enough it worked, but durring the save it crashs and when i restart the yogbox i can walk 3 steps then it autosaves again and crashs. it says "saving chunks" then does a grey screen

Error Messages:

Error Log:

[Ashzification]

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