[Django]-Authentication credentials were not provided django-rest-auth

As @neverwalkaloner mentioned already JWT keyword suppose to be the value of Authorization in the header section of Postman. Docs

Additionally, if you don’t want JWT as a keyword in with your token, you can customize it from your settings: with following key: JWT_AUTH_HEADER_PREFIX

JWT_AUTH = {
    'JWT_ENCODE_HANDLER':
    'rest_framework_jwt.utils.jwt_encode_handler',

    'JWT_DECODE_HANDLER':
    'rest_framework_jwt.utils.jwt_decode_handler',

    'JWT_PAYLOAD_HANDLER':
    'rest_framework_jwt.utils.jwt_payload_handler',

    'JWT_PAYLOAD_GET_USER_ID_HANDLER':
    'rest_framework_jwt.utils.jwt_get_user_id_from_payload_handler',

    'JWT_RESPONSE_PAYLOAD_HANDLER':
    'rest_framework_jwt.utils.jwt_response_payload_handler',

    'JWT_SECRET_KEY': settings.SECRET_KEY,
    'JWT_GET_USER_SECRET_KEY': None,
    'JWT_PUBLIC_KEY': None,
    'JWT_PRIVATE_KEY': None,
    'JWT_ALGORITHM': 'HS256',
    'JWT_VERIFY': True,
    'JWT_VERIFY_EXPIRATION': True,
    'JWT_LEEWAY': 0,
    'JWT_EXPIRATION_DELTA': datetime.timedelta(days=1),
    'JWT_AUDIENCE': None,
    'JWT_ISSUER': None,

    'JWT_ALLOW_REFRESH': True,
    'JWT_REFRESH_EXPIRATION_DELTA': datetime.timedelta(days=7),  
    'JWT_AUTH_HEADER_PREFIX': 'Bearer', #this most commonly accepted way
    'JWT_AUTH_COOKIE': None,

}