Issue with Token API for rest call

I am making call as below -

curl --location 'https://

Response is as below -

{
"Code": -2,
"Msg": [
"Authentication failed, unable to log in to the Address Book with the given User ID and Password."
]
}

I checked through web that for the user UID: "maximizer",
Password: "

What could be issue. Is this due to some access configuration ?
How to enable logs and where to check logs for understanding the issue in more details ?

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