/wp-json/ failed on localhost

Hello, In first, thanks for your plugin.
I did the intallation and i got some problem with the /wp-json.
My permalink configuration should be ok and i just got a 404 error when i’m trying to access to https://localhost/wp-json or https://localhost/myproject/wp-json.

Can you help me ?
Thanks

https://www.ads-software.com/plugins/json-rest-api/