I have the following code:
public static function test(){
    try{
        $apiContext = ApiContext::create(
            'test', 'bcy', 'v1',
            new SimpleTokenCredential('my_token'),
            array(       'mode' => 'sandbox','log.LogEnabled' => false, 'log.FileName' => 'BlockCypher.log',   'log.LogLevel' => 'DEBUG') );
        $input = new \BlockCypher\Api\TXInput();
        $input->addAddress("input_address");
        $output = new \BlockCypher\Api\TXOutput();
        $output->addAddress("output_address ");
        $output->setValue(1000); // Satoshis
        /// Tx
        $tx = new \BlockCypher\Api\TX();
        $tx->addInput($input);
        $tx->addOutput($output);
        $request = clone $tx;
        $txClient = new TXClient($apiContext);
        try {
            $output = $txClient->create($tx);
        } catch (Exception $ex) {
            dd("Created TX", "TXSkeleton", null, $request, $ex);
            exit(1);
        }
        dd("Created TX", "TXSkeleton", $output->getTx()->getHash(), $request, $output);
        return $output;
    }
    catch (\BlockCypher\Exception\BlockCypherConnectionException $ex) {
        echo $ex->getData();
        die;
    }
}
it gives error for checking url get/post
The response I get is as follows:
{
  "errors":[
    {
      "error":"Unable to find a transaction to spend for address CCrB7dvBT1bqNfWxupKPH9v8yN7xukmqUF."
    },
    {
      "error":"Error building transaction: Address 33cjwDAyNeAPVUMWqh9hdRxdmwdTE4kyTx is of unknown size.."
    },
    {
      "error":"Not enough funds after fees in 0 inputs to pay for 0 outputs, missing -22200."
    },
    {
      "error":"Error validating generated transaction: Transaction missing input or output."
    }
  ],
  "tx":{
    "block_height":-1,
    "block_index":-1,
    "hash":"d21633ba23f70118185227be58a63527675641ad37967e2aa461559f577aec43",
    "addresses":[
    ],
    "total":0,
    "fees":0,
    "size":10,
    "preference":"low",
    "relayed_by":"116.193.163.150",
    "received":"2017-11-14T10:20:43.757719705Z",
    "ver":1,
    "double_spend":false,
    "vin_sz":0,
    "vout_sz":0,
    "confirmations":0,
    "inputs":[
    ],
    "outputs":[
    ]
  }
}