Erro ao rodar o puppet para fazer o deploy do vraptor-musicjungle.war

Ao criar a sessão file no manifesto web.app para copiar o pacote war para o puppet fazer o deploy, o puppet retorna a seguinte mensagem:

sudo puppet apply /vagrant/manifests/web.pp
Notice: Compiled catalog for ubuntu-bionic in environment production in 0.49 seconds
Error: Parameter mode failed on File[/var/lib/tomcat8/webapps/vraptor-musicjungle.war]: The file mode specification must be a string, not 'Integer' (file: /vagrant/manifests/web.pp, line: 17)

Conteúdo do arquivo web.pp

exec { "apt-update":
    command => "/usr/bin/apt-get update"
}
package { ["openjdk-8-jre", "tomcat8"]:
    ensure => installed,
    require => Exec["apt-update"]
}

service {   "tomcat8":
    ensure => running,
    enable => true,
    hasstatus => true,
    hasrestart => true,
    require => Package["tomcat8"]
}

file { "/var/lib/tomcat8/webapps/vraptor-musicjungle.war":
    source => "/vagrant/webapp/vraptor-musicjungle.war",
    owner => tomcat8,
    group => tomcat8,
    mode => 0644,
    require => Package["tomcat8"],
    notify => Service["tomcat8"]
}