REST API returns date in bytes and stream

Hello
I use the Rest Api Sql Datasource to query the database and return values.
It was working fine till i recently created a Inner join on 2 tables.
Everything works fine but only issue is with Date format.
The Dates are not coming clearly. The date is returned as a stream. Please see below format.

"ACTIVATIONDATE": {
"stream": {

        },
        "null": false,
        "connectionDuringExceptionHandling": null,
        "length": 7,
        "valid": true,
        "bytes": [
            120,
            118,
            12,
            17,
            4,
            1,
            1
        ]
    },

Please suggest what i can do here. Why am i getting stream and bytes. What can i do to get output in Date
Regards