title: Hyperledger explorer starting problem- orderer port communication issue
body: <p>I just started my hyperledger composer network. Now I need to start hyperledger explorer for this network. I already download the hyperledger explorer github repository using the link <a href="https://github.com/hyperledger/blockchain-explorer" rel="nofollow noreferrer">https://github.com/hyperledger/blockchain-explorer</a>. I just try to start the explorer. But get the error in every time that</p>
  
  <pre><code>enter Please open web browser to access ：http://localhost:9048/
  pid is 31931
  
  
  [31merror[39m: [Orderer.js]: sendDeliver - rejecting -   status:NOT_FOUND
  [31merror[39m: [Orderer.js]: sendDeliver - rejecting - status:NOT_FOUND
  [31merror[39m: [Orderer.js]: sendDeliver - rejecting - status:NOT_FOUND
  (node:31931) UnhandledPromiseRejectionWarning: Error: Invalid results returned ::NOT_FOUND
  at ClientDuplexStream.&lt;anonymous&gt; (/home/myname/Pictures/blockchain-explorer-Production/node_modules/fabric-client/lib/Orderer.js:229:22)
  at ClientDuplexStream.emit (events.js:180:13)
  at addChunk (_stream_readable.js:274:12)
  at readableAddChunk (_stream_readable.js:261:11)
  at ClientDuplexStream.Readable.push (_stream_readable.js:218:10)
  at readCallback (/home/myname/Pictures/blockchain-explorer-Production/node_modules/grpc/src/client.js:312:14)
  (node:31931) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
  (node:31931) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
  (node:31931) UnhandledPromiseRejectionWarning: Error: Invalid results returned ::NOT_FOUND
  at ClientDuplexStream.&lt;anonymous&gt; (/home/myname/Pictures/blockchain-explorer-Production/node_modules/fabric-client/lib/Orderer.js:229:22)
  
  
  textProperty config.syncStartDate set to  2018/10/01
  </code></pre>
  
  <p>I think the error is due to orderer service.</p>
  
  <p>I fully checked my orderer port in config.json file of hyperledger explorer.</p>
  
  <pre><code> {
  "network-config": {
      "org1": {
          "name": "Org1",
          "mspid": "Org1example",
          "peer0": {
              "requests": "grpc://192.168.1.49:7051",
              "events": "grpc://192.168.1.49:7053",
              "server-hostname": "peer0.org1.example.com",
              "tls_cacerts": "/home/myname/Pictures/Kafka-Fabric-Network-master-3peer/crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt"
          },
                      "peer1": {
              "requests": "grpc://192.168.1.49:9051",
              "events": "grpc://192.168.1.49:9053",
              "server-hostname": "peer1.org1.example.com",
              "tls_cacerts": "/home/myname/Pictures/Kafka-Fabric-Network-master-3peer/crypto-config/peerOrganizations/org1.example.com/peers/peer1.org1.example.com/tls/ca.crt"
          },
          "admin": {
              "key": "/home/myname/Pictures/Kafka-Fabric-Network-master-3peer/crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/keystore",
              "cert": "/home/myname/Pictures/Kafka-Fabric-Network-master-3peer/crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/signcerts"
          }
  }
  
  },
  "channel": "examplechannel",
  "orderers":[
              {
              "mspid": "OrdererOrg",
              "server-hostname":"orderer0.example.com",
              "requests":"grpc://192.168.1.49:7050",
              "tls_cacerts":"/home/myname/Pictures/Kafka-Fabric-Network-master-3peer/crypto-config/ordererOrganizations/example.com/orderers/orderer0.example.com/tls/ca.crt"
              }
              ],
  "keyValueStore": "/tmp/fabric-client-kvs",
  "configtxgenToolPath": "/home/myname/Pictures/Kafka-Fabric-Network-master-3peer/bin",
  "SYNC_START_DATE_FORMAT":"YYYY/MM/DD",
  "syncStartDate":"2018/08/01",
  "eventWaitTime": "30000",
  "license": "Apache-2.0",
  "version": "1.1"
  }
  </code></pre>
  
  <p>Fabric:1.1.0</p>
  
  <p>Composer:0.19.16</p>
  
  <p>OS: Ubuntu 16.04</p>
  
  <p>Explorer: 0.3.4 </p>
  
  <p>How it solve. Please give me an idea to solve this issue. Thanks in advance</p>