When I add a row, it popup warning

I am preparing an user management with datatable plugin.
It works fine.
However,I add the attribute data-order="0,1000" to the first column of the first row for keeping the "anonymous" row always on top.
When I click on the upper left hand corner "+" , I got a warning message in the .png file of attachment.
How can I fix the problem?
I attached a zip file for your reference.
All related files are stored in the zip file.