Ched node setup

Hi all,

Need an help on a chef node setup, i use centos via oracle Virtual box. I had created local chef server and chef work station. They are trying to communicate and i can see an response from chef server and can able to upload the cook books. when i tried to bootstrap the node i am seeing the following error. can any one help. I checked up the chef docs for node setup and it did not help me either

ERROR: You rptivate key could not be loaded from /etc/chef/client.pem.

but i cant see any client.pem exists what i can see at that location was raj.pem and chef-validator.pem.

need to know from where it is picking up client.pem