Getting error while adding data using api in Cakephp 2.10

I am adding data in a GRC framework Eramba which is using cake php 2.10 using api calls and getting this error:

{ "code": 500, "name": "AclNode::node() - Couldn't find Aro node identified by "Array\n(\n [Aro0.model] => User\n [Aro0.foreign_key] => \n)\n"", "message": "AclNode::node() - Couldn't find Aro node identified by "Array\n(\n [Aro0.model] => User\n [Aro0.foreign_key] => \n)\n"", "url": "\/api\/risks.json" }

Can anyone please help me in this. I am stuck in this one from last few days and getting no solution.?

Thanks in advance.

i think Authentication issue, as “aco” and “aro” tables belongs to ACL so check there might be you get fix your issue