slack - node-red と watson Conversation サービス。エラー: 権限がありません。ワトソン会話サービスの呼び出しに失敗しました

Question

node-red と Watson の Conversation サービスで Slack Bot を作りたいです。これは私のコードです：

    [
   {
      "id":"92984fcb.13597",
      "type":"http in",
      "z":"f83b7887.f92208",
      "name":"watson slack",
      "url":"/watson-rg-1",
      "method":"post",
      "swaggerDoc":"",
      "x":96,
      "y":116.35000610351562,
      "wires":[
         [
            "119d86bd.3ce22d"
         ]
      ]
   },
   {
      "id":"19d684b0.ceb487",
      "type":"http request",
      "z":"f83b7887.f92208",
      "name":"slack response",
      "method":"POST",
      "ret":"txt",
      "url":"https://hooks.slack.com/services/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",
      "tls":"",
      "x":782,
      "y":126.58999633789062,
      "wires":[
         [

         ]
      ]
   },
   {
      "id":"119d86bd.3ce22d",
      "type":"switch",
      "z":"f83b7887.f92208",
      "name":"Command parser",
      "property":"payload.text",
      "propertyType":"msg",
      "rules":[
         {
            "t":"regex",
            "v":"^!coin",
            "vt":"str",
            "case":false
         },
         {
            "t":"else"
         }
      ],
      "checkall":"true",
      "outputs":2,
      "x":148,
      "y":203.27999877929687,
      "wires":[
         [
            "c1ef9e78.1efb1"
         ],
         [
            "9d1c215b.7e936",
            "1fd76cf2.10950f"
         ]
      ]
   },
   {
      "id":"c1ef9e78.1efb1",
      "type":"function",
      "z":"f83b7887.f92208",
      "name":"real payload filter",
      "func":"return {\n    payload: Math.random() >= 0.5 ? \"heads\" : \"Tails\"\n};",
      "outputs":1,
      "noerr":0,
      "x":416,
      "y":282.2799987792969,
      "wires":[
         [
            "7b8c968d.58d104"
         ]
      ]
   },
   {
      "id":"7b8c968d.58d104",
      "type":"function",
      "z":"f83b7887.f92208",
      "name":"watson slack message",
      "func":"var text = {\n    text: msg.payload,\n    username : \"watson\"\n};\nreturn {\n    payload : JSON.stringify(text)\n};\n",
      "outputs":1,
      "noerr":0,
      "x":644,
      "y":198.27999877929687,
      "wires":[
         [
            "19d684b0.ceb487"
         ]
      ]
   },
   {
      "id":"9d1c215b.7e936",
      "type":"function",
      "z":"f83b7887.f92208",
      "name":"Get user context",
      "func":"msg.payload = msg.payload.text;\nmsg.user = \"toto\";\n//msg.params.context = {};\nreturn msg;",
      "outputs":1,
      "noerr":0,
      "x":332,
      "y":448,
      "wires":[
         [
            "f9fc1260.dd5a",
            "446d3ae.e966804"
         ]
      ]
   },
   {
      "id":"f9fc1260.dd5a",
      "type":"watson-conversation-v1",
      "z":"f83b7887.f92208",
      "name":"",
      "workspaceid":"",
      "multiuser":false,
      "context":true,
      "x":512,
      "y":448,
      "wires":[
         [
            "d7f5e507.82bf18",
            "c5685f38.2a269"
         ]
      ]
   },
   {
      "id":"d7f5e507.82bf18",
      "type":"function",
      "z":"f83b7887.f92208",
      "name":"Handle response",
      "func":"var user = msg.user;\nvar convContext = flow.get('convContexts')||{};\n\nconvContext[user] = msg.payload.context;\n\nmsg.payload = msg.payload.output.text.join(\"\\n\");\n\nflow.set('convContexts',convContext);\n\nreturn msg;",
      "outputs":"1",
      "noerr":0,
      "x":712,
      "y":448,
      "wires":[
         [
            "7b8c968d.58d104"
         ]
      ]
   },
   {
      "id":"446d3ae.e966804",
      "type":"debug",
      "z":"f83b7887.f92208",
      "name":"getUserCtx",
      "active":true,
      "console":"false",
      "complete":"payload",
      "x":505,
      "y":356.5299987792969,
      "wires":[

      ]
   },
   {
      "id":"c5685f38.2a269",
      "type":"debug",
      "z":"f83b7887.f92208",
      "name":"AfterConv",
      "active":true,
      "console":"false",
      "complete":"payload",
      "x":677,
      "y":508.52996826171875,
      "wires":[

      ]
   },
   {
      "id":"1fd76cf2.10950f",
      "type":"debug",
      "z":"f83b7887.f92208",
      "name":"slack payload",
      "active":true,
      "console":"false",
      "complete":"payload",
      "x":135,
      "y":388.5299987792969,
      "wires":[

      ]
   }
]

しかし、私がテストするとき。最初のブランチは機能します (slack と node-red の間のリンクが機能するかどうかをテストするためだけに実行しました) が、もう 1 つのブランチ (会話ノードを使用) は機能しません。

2 つのエラーがあります。

1. ワトソン会話サービスの呼び出しに失敗しました

2. エラー: 許可されていません