Hello guys, can someone help me?

I am trying to enable hotlink protection at the cpanel but I get this error:

There was an error while enabling hotlink protection.
Apache detected an error in the Rewrite config. Syntax error on line 18 of /home/mypic/public_html/.htaccess.1fEIjBzI_rubXL9b4hT8DKDjdHCo_9En:
ErrorDocument takes two arguments, Change responses for HTTP errors
Please try again.
What could be?
Please help me...
Divvy Reviewed by Divvy on . Apache detected an error in the Rewrite config Hello guys, can someone help me? I am trying to enable hotlink protection at the cpanel but I get this error: There was an error while enabling hotlink protection. What could be? Please help me... Rating: 5