404 on create_intent via solidus_stripe gem

Trying to integrate v3 intents , followed the readme but i keep getting thoses errors on js side :

Feature Policy: Skipping unsupported feature name “payment”. v3:1:78187
Feature Policy: Skipping unsupported feature name “payment”. v3:1:78325
Feature Policy: Skipping unsupported feature name “payment”. v3:1:178554

and when i submit the test card informations :

POSThttps://_my_web_site_url.com/stripe/create_intent [HTTP/1.1 404 Not Found 897ms]

I keep searching for what kind of integration error i could’ve done but nothing , i have the feeling it lack a memeber of the posting url
all mentions in stripe’s doc are specifying a version in them .

i’am running

rails 5.2.6 on ruby 2.7 with:
solidus (2.10.5)
solidus_api (= 2.10.5)
solidus_backend (= 2.10.5)
solidus_core (= 2.10.5)
solidus_frontend (= 2.10.5)
solidus_sample (= 2.10.5)
solidus_api (2.10.5)
solidus_stripe (4.2.0)


config.static_model_preferences.add(
Spree::PaymentMethod::StripeCreditCard,
'stripe_env_credentials',
secret_key:'sk_test_aksdhflkajsgdflkuasgdf',
publishable_key: 'pk_test_kjhga;lihglkashglasd',
stripe_country: 'FR',
v3_elements: false,
v3_intents: true,
)

And the stripe static conf has been selected in the backend’s payment page .

THanks in advance for reading / helping .