Не указано использование сертификата SSL Ubuntu 18.04.02

Чтобы протестировать сертификаты CA для Fabric CA: Руководство пользователя Fabric CA Я следовал следующим указаниям: Защита PostgreSQL с использованием hostssl cert clientcert = 1

В fabric-ca-server-config.yaml Я положил:

ca:
  # Name of this CA
  name: fabric_ca
  # Key file (is only used to import a private key into BCCSP)
  keyfile: /etc/ssl/private/fabric_ca.key
  # Certificate file (default: ca-cert.pem)
  certfile: /usr/local/share/ca-certificates/fabric_ca.crt
  # Chain file
  chainfile:


db:
  type: postgres
  datasource: host=localhost port=5433 user=postgres password=pwd   
    dbname=fabmnet_ca sslmode=require
  tls:
    enabled: false
    certfiles:
    client:
      certfile: /home/marco/.postgresql/postgresql.crt
      keyfile: /home/marco/.postgresql/postgresql.key

При запуске Fabric-CA-Server:

(base) marco@pc:~/fabric/fabric-ca$ fabric-ca-server init -b admin:adminpw
2019/10/01 15:11:48 [INFO] Configuration file location: /home/marco/fabric
  /fabric-ca/fabric-ca-server-config.yaml
2019/10/01 15:11:48 [INFO] Server Version: 1.4.4
2019/10/01 15:11:48 [INFO] Server Levels: &{Identity:2 Affiliation:1  
  Certificate:1 Credential:1 RAInfo:1 Nonce:1}
2019/10/01 15:11:48 [INFO] The CA key and certificate files already exist
2019/10/01 15:11:48 [INFO] Key file location: /etc/ssl/private
  /fabric_ca.key
2019/10/01 15:11:48 [INFO] Certificate file location: /usr/local/share/ca-
  certificates/fabric_ca.crt
2019/10/01 15:11:48 [FATAL] Initialization failure: Validation of 
  certificate and key failed: Invalid certificate in file '/usr/local
  /share/ca-certificates/fabric_ca.crt': No usage specified for 
  certificate

Есть идеи, как решить эту проблему? Марко