The preferred_username value is not in the endpoit query

1

Hello, cordial greetings to all.

I am making a query to the following endpoint /protocol/openid-connect/userinfo To obtain the values ​​of the user who is logging in, and it is not returning the preferred_username value.
I am receiving the JSON like this:

{
“sub”:“f:66caf5b3-d26f-4186-a112-62e527238e55:2984”,
“email_verified”:true
}

Instead of receiving it like this:

{
“sub”:“f:66caf5b3-d26f-4186-a112-62e527238e55:2984”,
“email_verified”:true,
“preferred_username”:“hcres”
}

I don’t have much experience in Keycloak, I appreciate your help.