Invalid credentials for '', aborting.

I have created Access key on my magento account. So I got Public Key and Private key.
I have put them in auth.json in magento2 root directory but while I run composer install, I am getting this error.

Invalid credentials for ‘’, aborting.

Any idea?

It means that your credentials are wrong.
Also, even a free module published in Magento Marketplace should be ordered there before the installation.

Hi @dmitry_fedyuk
Thank you for your reply.

I have attached my credentials. It looks like I am using the correct one.

I do not see any proofs in your screenshot.