DataTables warning: table id=change_list – Ajax error. For more information about this error, please see http://datatables.net/tn/7
The error you saw generally points to a corrupt record in your data.
I tried deleting some of the earliest few days of records you have, and they all deleted OK.
I’d prefer not to be the one deleting your data though 🙂
I recommend you delete in blocks until you find and narrow down the item in question. If you can identify a single record, or at least a small block of them you can show me the page (before you click “delete”, so I can tell if there are any obvious and fixable issues. Otherwise, delete them manually from the database (“xx_changes” table)