NSS authentication is failing in FIPS mode in Centos7

Hi ,

In FIPS mode I was using this nsspassword.
“NSS FIPS 140-2 Certificate DB:mypassphrase"

But it is failing with the below error in logs: Jun 27 12:36:11: authentication of “NSS FIPS 140-2 Certificate DB” failed Jun 27
12:36:11: FATAL: NSS initialization failure

I was using CentOS Linux release 7.4.1708 (Core) with libreswan-3.20-3.el7.x86_64.
Can anyone please help me to resolve this.

Regards,
Vyshnav