How to solve this problem when creating migrations?

Question

symfony

I put the Security Bundle, I got to the migrations after creating the User entity. An error occurred:

The content of the doctrine.yaml config is as follows:

doctrine:
    dbal:
        url: '%env(resolve:DATABASE_URL)%'

        # IMPORTANT: You MUST configure your server version,
        # either here or in the DATABASE_URL env var (see .env file)
        #server_version: '5.7'
    orm:
        auto_generate_proxy_classes: true
        naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
        auto_mapping: true
        mappings:
            App:
                is_bundle: false
                type: yml
                dir: '%kernel.project_dir%/src/Entity'
                prefix: 'App\Entity'
                alias: App

I am not very good at Symphony yet, I have previously worked with other frameworks (mainly Yii2). Help me to understand.