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스크린샷 2017-06-02 오후 9.20.12.png

You faced this issue , right ?

The cause is that your text contains special character.
It can be show-up on sublime text editor after you paste text like below(https://www.sublimetext.com/ )
As you can see, the special character is shown as "BS".
You can successfully post by removing special character on sublime text editor.

스크린샷 2017-06-02 오후 9.38.05.png