GET user access token via api

Getting advice
1

Hi guys,
I was trying to get the access-token for the client that i created via the provided in this link:

The error i got was:

{
    "error": "RESTEASY003210: Could not find resource for full path: http://0.0.0.0:8080/auth/realms/master/protocol/openid-connect/token"
}

The body params are:
{
“client_id”:“admin”,
“client_secret”: “secret”
“grant_type”:“authorization_code”
}
Also i am using keycloak 17 on as my local server. i was not able to find any api that fetches access-token in the keycloak 17 doc provided the required parameters . I am running the server in its default port 8080. is there any such api that can retrive the particular user’s access-token?

Please help me out.