The game crashes whenever I try to open the world

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I expected to get an item through the /give command
What actually happened was...:
Describe what happened here
The game crashes whenever I try to open my world
Steps to Reproduce:
1. Type /
2. Type in the command:

/give @p leather_helmet {ench:[0:{id:0,lvl:10,},],display:[0:{color:1,},],} 

3. Enter the command