I'm running PAM 4.0 and try to create a CSR.

I specify all the necessary details including SAN's 

DNS:%server FQDN%, DNS:%alias name%, IP:%IP of the server%

when I click on "Next" I'm getting Error "Failed to create certificate request"

I have tried different browsers and also tried with different details with, without and with just one Alternative names, always the same error.

Within the unified log I see 

admin certRequest client:localhost user:admin@%servername%-01(172.27.4.11) rc:0 status:500(Failed to create certificate request) (4ms)

also I'm getting many Error (5) accepting SSL connection from two different IP's and different Ports

How can i create a CSR to provide to my certification authority to generate a Certificate?