# Draggable prototype error

**URL:** <https://www.ruby-forum.com/t/draggable-prototype-error/150303>\
**Category:** Rails\
**Created:** [October 7, 2008, 5:04am UTC](https://www.ruby-forum.com/t/draggable-prototype-error/150303 "2008-10-07T05:04:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [October 7, 2008, 5:04am UTC](https://www.ruby-forum.com/t/draggable-prototype-error/150303/1 "2008-10-07T05:04:38Z")

</div>

I am doing no CSS just this:  
\<%= draggable\_element :block %\>

I am getting a firebug error pointing to protoype:

element is null  
[http://localhost:3000/javascripts/prototype.js?1222747699](http://localhost:3000/javascripts/prototype.js?1222747699)  
Line 1881

Any ideas?

If I disable the draggable it goes away.