JSON.parse showing Uncaught SyntaxError: Unexpected token N

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Javascript

PHP

This is code snippet returning me json string

while($row = mysql_fetch_assoc($result))
   {
       $data[] = $row;
   }
   echo json_encode($data);

i am trying to parse it back to object but it showing me
Uncaught SyntaxError: Unexpected token N
while simple code is in js

$jq.get(go_path,
{
}, function(data)
{

console.log(data);
          
          var myData = JSON.parse(data);//this making error:(
          console.log(typeof myData);

}