hashed correctly?

puppetmaster.yaml

---
tomcat_instance:
  myghsrv1:
    conf:
      port1:
        port: 16
      env1:
        env: poc


excerpt from init.pp

$tomcat_instance = hiera('tomcat_instance')
$env = $tomcat_instance[myghsrv1][conf][env]


error message

[root@puppetmaster ~]# puppet apply /etc/puppetlabs/puppet/modules/tomcat/tests/init.pp -vd --noop
info: Loading facts in facter_dot_d
info: Loading facts in facter_dot_d
warning: Could not retrieve fact fqdn
debug: importing '/etc/puppetlabs/puppet/modules/tomcat/manifests/init.pp' in environment production
debug: Automatically imported tomcat from tomcat into production
debug: Failed to load library 'selinux' for feature 'selinux'
debug: hiera(): Hiera YAML backend starting
debug: hiera(): Looking up tomcat_instance in YAML backend
debug: hiera(): Looking for data source puppetmaster
notice: Scope(Class[Tomcat]):
debug: importing '/etc/puppetlabs/puppet/modules/tomcat/manifests/instance.pp' in environment production
debug: Automatically imported tomcat::instance from tomcat/instance into production
Invalid parameter conf on node puppetmaster