**Symfony version(s) affected**: 5.2.0-BETA3 **Description** ``` monolog: handlers: mail: type: fingers_crossed action_level: error excluded_http_codes: [ 400, 403, 404 ] handler: deduplicated deduplicated: type: deduplication handler: mailer mailer: type: symfony_mailer from_email: '%env(resolve:EMAIL_SENDER)%' to_email: '%env(EMERGENCY_EMAIL)%' subject: 'An Error Occurred! %%message%%' ``` and ``` framework: http_client: default_options: retry_failed: http_codes: [ 429 ] ``` leads to ``` Maximum function nesting level of '256' reached, aborting! ``` on ```bash bin/console cache:clear --env=prod ``` **How to reproduce** https://github.com/BoShurik/retriyable-http-client-issue