Can't create a new Certificate Signing Request(CSR)?

I am trying to test my app on my iOS device. To do so I ill need to create a Certificate Signing Request(CSR).

These are the steps I took:

Open Keychain Access in the Utilities folder.
On the drop down menu clicked Keychain Access → Certificate assistant → Request a Certificate from a Certificate Authority
Entered my apple id email address and my name
ticked Save to disk
Clicked continue
Save the CSR on desktop

Then the error:

The specified keychain is not a valid keychain file

I have tried the search engine for answers and I had no luck! Any help would be very much appreciated! Thanks in advance!

Solution

I have solved this question! Here are the steps:

Go to your terminal and type in:

ls -l ~/Library/

This will make sure that the permissions on the keychain folder are correct.

privs on the Keychains folder should be

drwxr-xr-x

If it is not drwxr-xr-x then follow these steps:

This solved my problem! :)