Symfony FOSElasticaBundle configuration

Question

I am having a problem.

• Symfony: 4.4
• Elasticsearch: 7.6.1
• FOSElasticaBundle: 5.1
• PHP: 7.2.26

My configuration:

fos_elastica:
    clients:
        default: { url: '%env(ELASTICSEARCH_URL)%' }
    indexes:
        app:
            finder: ~
            types:
                city:
                    properties:
                        name: ~
                    persistence:
                        driver: orm
                        model: App\Entity\City
                        provider: ~
                        finder: ~

Command:

php bin/console fos:elastica:populate

Error:

Root mapping definition has unsupported parameters:  [city : {dynamic_date_formats=[], _meta={model=App\Entity\City}, properties={name={type=text}}}] [reason: Failed to parse mapping [_doc]: Root map
  ping definition has unsupported parameters:  [city : {dynamic_date_formats=[], _meta={model=App\Entity\City}, properties={name={type=text}}}]]