Minecraft Keeps Crashing While Saving!

Hello!

Yesterday I Wanted To Play Minecraft, I Played For 30 Seconds Thats When The Chest Image (That Indicates That Its Saving) Popped Up, It Was Normal, Until It Froze And Kicked Me, I Tried Another Time, Nothing Worked, I Spoke To A Minecraft Specialist, He Told Me To Report The Bug Cause Everything We Tried Didn't Work, Can Someone Please Try Fixing This?