Symfony 4 config client base_url from .env

[KnechtRootRecht232]

How to set the base url in client-config with .env?

eight_points_guzzle:
    clients:
        my_client:
            # Write here the host where to do requests
            base_url: "%env(TARGET_URL)%"

this throws: Invalid configuration for path "eight_points_guzzle.clients.sc_inspirations.base_url": base_url can be: string

same when adding to parameters in services.yaml as config-var:

parameters:
    my_client.target_url: "%env(TARGET_URL)%"

and

eight_points_guzzle:
    clients:
        my_client:
            # Write here the host where to do requests
            base_url: "%my_client.target_url%"

Q	A
Symfony version	4.1.3
Bundle version	7.3

[KnechtRootRecht232]

solved it by my self:

'%env(string:TARGET_URL)%'