root@vps-01:~/vpn/EasyRSA-v3.0.6# ./easyrsa build-ca nopass

Note: using Easy-RSA configuration from: ./vars

Using SSL: openssl OpenSSL 1.1.1a  20 Nov 2018
Generating RSA private key, 2048 bit long modulus (2 primes)
..+++++
...................................................................................................................+++++
e is 65537 (0x010001)
req: Error on line 90 of config file "/root/vpn/EasyRSA-v3.0.6/pki/safessl-easyrsa.cnf"
req: Error on line 90 of config file "/root/vpn/EasyRSA-v3.0.6/pki/safessl-easyrsa.cnf"
unable to find 'distinguished_name' in config
problems making Certificate Request
139741700802112:error:0E06D06A:configuration file routines:NCONF_get_string:no conf or environment variable:../crypto/conf/conf_lib.c:270:

Easy-RSA error:

Failed to build the CA