tabacco service fails if backup_repository_uri is not configured

The tabacco-agent does not start because of:

Jul 19 13:45:10 floatapp1 tabacco[7365]: configuration error: missing uri

that is because the configuration in /etc/tabacco/agent.yml has no uri configured:

root@leapgwv6:~# cat /etc/tabacco/agent.yml 
hostname: "gateway2"
default_nice_level: 9
default_io_class: 3
work_dir: /var/lib/tabacco
random_seed_file: /var/lib/tabacco/.seed
queue_config:
  concurrency: 2
metadb:
  url: "https://backup-metadata.infra.bitmask.net:5332"
  tls:
    cert: "/etc/credentials/x509/backup-agent/client/cert.pem"
    key: "/etc/credentials/x509/backup-agent/client/private_key.pem"
    ca: "/etc/credentials/x509/backup-agent/ca.pem"
  request_max_timeout: "20s"
repository:
  name: default
  type: restic
  params:
    uri: ""
    password: ""
    cache_dir: /var/cache/tabacco
root@leapgwv6:~#