whenever i try to join my world it says downloading terrain and i looked at the crash log and it had a fatal error message,so i ended up here

(I think this caused it):

/give @p diamond_sword 1 0 {display:

{Name:"ultamate sword",Lore:["the only sword you will need"]}

,AttributeModifiers:[

{AttributeName:"generic.maxHealth",Name:"generic.maxHealth",Amount:999999999,Operation:0,UUIDMost:4671,UUIDLeast:109766}

,

{AttributeName:"generic.followRange",Name:"generic.followRange",Amount:15,Operation:0,UUIDMost:92201,UUIDLeast:637363}

,

{AttributeName:"generic.knockbackResistance",Name:"generic.knockbackResistance",Amount:999999999,Operation:0,UUIDMost:84758,UUIDLeast:41950}

,

{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:0.35,Operation:0,UUIDMost:52699,UUIDLeast:416573}

,

{AttributeName:"generic.attackDamage",Name:"generic.attackDamage",Amount:999999999,Operation:0,UUIDMost:81087,UUIDLeast:52192}

],ench:[

{id:16,lvl:29536}

,

{id:19,lvl:40}

,

{id:20,lvl:190}

,

{id:21,lvl:50}

],Unbreakable:1}