发送旧日志的monolog

我有网络应用程序,用symfony-flex构建,用于部署我使用capistrano.为了记录关键日志,我已经以这种方式配置了monolog:

monolog:
    handlers:
        main:
            type: fingers_crossed
            action_level: error
            channels: ['!translation']
            excluded_http_codes: [{ 404: ['^/security/login'] }]
            handler: grouped
        grouped:
            type: group
            members: [deduplicated]
        deduplicated:
            type:    deduplication
            handler: swift
        swift:
            type:       swift_mailer
            from_email: '%mailer_user%'
            to_email:   ['email1@gmail.com', 'email2@gmail.com']
            subject:    " %%level_name%% %%level%%"
            level:      info
            formatter:  monolog.formatter.html
            content_type: text/html

SwiftMailer配置:

swiftmailer:
    url: '%env(MAILER_URL)%'
    spool: { type: 'memory' }

除了每次发布后的日志,一切正常.我收到之前发送过的旧日志.例:

也许我错过了配置中的一些东西？