Utterances are not expanding from utterances.txt file if run thru botium-cli

Problem:
My folder has the following files
botium.json
give_me_a_picture.convo.txt
ut.utterances.txt

My CLI is as below. None of the utterances in the ut.utterances.txt are getting expanded. Below is the log. Can you please let me know what am I doing wrong?
Any help is appreciated.

MAC:DL user$ botium-cli run --expandutterances true --config botium.json --convos give_me_a_picture.convo.txt
  botium-cli Using Botium configuration file botium.json +0ms
  botium-cli-run command options: { _: [ 'run' ],
  botium-cli-run   expandutterances: 'true',
  botium-cli-run   config: 'botium.json',
  botium-cli-run   c: 'botium.json',
  botium-cli-run   convos: [ 'give_me_a_picture.convo.txt' ],
  botium-cli-run   C: [ 'give_me_a_picture.convo.txt' ],
  botium-cli-run   verbose: false,
  botium-cli-run   v: false,
  botium-cli-run   output: 'spec',
  botium-cli-run   testsuitename: 'Botium Test-Suite',
  botium-cli-run   n: 'Botium Test-Suite',
  botium-cli-run   expandscriptingmemory: false,
  botium-cli-run   timeout: 60,
  botium-cli-run   '$0': 'botium-cli' } +0ms
  botium-cli-run Mocha Reporter "spec", options: undefined +0ms
  botium-core-BotDriver Loaded Botium configuration files /Users/user/botium/DL/botium.json +0ms
  botium-core-ScriptingProvider ReadConvosFromDirectory(.) found filenames: give_me_a_picture.convo.txt +0ms
  botium-core-ScriptingProvider ReadConvosFromDirectory(.) found convos:
  botium-core-ScriptingProvider  1 give_me_a_picture.convo.txt ({ convoDir: '.', filename: 'give_me_a_picture.convo.txt' }): Line 1: #bot - UTT_1 | Line 4: #me - UTT_2 | Line 7: #bot - UTT_3 | Line 10: #me - UTT_4 | Line 13: #bot - UTT_5 | Line 16: #me - UTT_6 | Line 19: #bot - UTT_7 | Line 22: #me - UTT_8 | Line 25: #bot - UTT_9 | Line 28: #me - UTT_10 | Line 31: #bot - UTT_11 | Line 34: #me - UTT_12 | Line 37: #bot - UTT_13 | Line 40: #me - UTT_14 | Line 43: #bot - UTT_15 | Line 46: #me - UTT_16 | Line 49: #bot - UTT_17 +5ms
  botium-core-ScriptingProvider ReadConvosFromDirectory(.) found utterances:
  botium-core-ScriptingProvider  none +0ms
  botium-core-ScriptingProvider ReadConvosFromDirectory(.) found partial convos:
  botium-core-ScriptingProvider  none +0ms
  botium-core-ScriptingProvider ReadConvosFromDirectory(.) scripting memories:
  botium-core-ScriptingProvider  none +0ms
  botium-cli-run ready reading convos (1), expanding convos ... +277ms
  botium-cli-run expanding utterances ... +1ms
  botium-core-ScriptingProvider ExpandConvos - Using utterances expansion mode: all +1ms
  botium-cli-run ready expanding convos and utterances, number of test cases: (1). +20ms
  botium-cli-run adding test case give_me_a_picture.convo.txt (from: { convoDir: '.', filename: 'give_me_a_picture.convo.txt' }) +3ms


  Botium Test-Suite
  botium-core-BotDriver Build - Botium Core Version: 1.11.2 +305ms
  botium-core-BotDriver Build - Capabilites: { PROJECTNAME: 'My Botium Project',
  botium-core-BotDriver   TESTSESSIONNAME: 'Botium Test Session',
  botium-core-BotDriver   TESTCASENAME: 'Botium Test Case',
  botium-core-BotDriver   TEMPDIR: 'botiumwork',
  botium-core-BotDriver   CLEANUPTEMPDIR: true,
  botium-core-BotDriver   WAITFORBOTTIMEOUT: 10000,
  botium-core-BotDriver   SIMULATE_WRITING_SPEED: false,
  botium-core-BotDriver   SIMPLEREST_PING_RETRIES: 6,
  botium-core-BotDriver   SIMPLEREST_PING_TIMEOUT: 10000,
  botium-core-BotDriver   SIMPLEREST_PING_VERB: 'GET',
  botium-core-BotDriver   SIMPLEREST_PING_UPDATE_CONTEXT: true,
  botium-core-BotDriver   SIMPLEREST_STOP_RETRIES: 6,
  botium-core-BotDriver   SIMPLEREST_STOP_TIMEOUT: 10000,
  botium-core-BotDriver   SIMPLEREST_STOP_VERB: 'GET',
  botium-core-BotDriver   SIMPLEREST_START_RETRIES: 6,
  botium-core-BotDriver   SIMPLEREST_START_TIMEOUT: 10000,
  botium-core-BotDriver   SIMPLEREST_START_VERB: 'GET',
  botium-core-BotDriver   SIMPLEREST_POLL_VERB: 'GET',
  botium-core-BotDriver   SIMPLEREST_POLL_INTERVAL: 1000,
  botium-core-BotDriver   SIMPLEREST_POLL_UPDATE_CONTEXT: true,
  botium-core-BotDriver   SIMPLEREST_METHOD: 'GET',
  botium-core-BotDriver   SIMPLEREST_IGNORE_EMPTY: true,
  botium-core-BotDriver   SIMPLEREST_TIMEOUT: 10000,
  botium-core-BotDriver   SIMPLEREST_EXTRA_OPTIONS: {},
  botium-core-BotDriver   SIMPLEREST_STRICT_SSL: true,
  botium-core-BotDriver   SIMPLEREST_INBOUND_UPDATE_CONTEXT: true,
  botium-core-BotDriver   SIMPLEREST_CONTEXT_MERGE_OR_REPLACE: 'MERGE',
  botium-core-BotDriver   SCRIPTING_TXT_EOL: '\n',
  botium-core-BotDriver   SCRIPTING_XLSX_EOL_WRITE: '\r\n',
  botium-core-BotDriver   SCRIPTING_XLSX_HASHEADERS: true,
  botium-core-BotDriver   SCRIPTING_CSV_SKIP_HEADER: true,
  botium-core-BotDriver   SCRIPTING_CSV_QUOTE: '"',
  botium-core-BotDriver   SCRIPTING_CSV_ESCAPE: '"',
  botium-core-BotDriver   SCRIPTING_NORMALIZE_TEXT: true,
  botium-core-BotDriver   SCRIPTING_ENABLE_MEMORY: false,
  botium-core-BotDriver   SCRIPTING_ENABLE_MULTIPLE_ASSERT_ERRORS: false,
  botium-core-BotDriver   SCRIPTING_MATCHING_MODE: 'wildcardIgnoreCase',
  botium-core-BotDriver   SCRIPTING_UTTEXPANSION_MODE: 'all',
  botium-core-BotDriver   SCRIPTING_UTTEXPANSION_RANDOM_COUNT: 1,
  botium-core-BotDriver   SCRIPTING_UTTEXPANSION_NAMING_MODE: 'justLineTag',
  botium-core-BotDriver   SCRIPTING_UTTEXPANSION_NAMING_UTTERANCE_MAX: '16',
  botium-core-BotDriver   SCRIPTING_MEMORYEXPANSION_KEEP_ORIG: false,
  botium-core-BotDriver   ASSERTERS: [],
  botium-core-BotDriver   LOGIC_HOOKS: [],
  botium-core-BotDriver   USER_INPUTS: [],
  botium-core-BotDriver   SECURITY_ALLOW_UNSAFE: true,
  botium-core-BotDriver   CONTAINERMODE: 'directline3',
  botium-core-BotDriver   DIRECTLINE3_SECRET: '####',
  botium-core-BotDriver   DIRECTLINE3_DOMAIN: 'https://directline.botframework.com/v3/directline',
  botium-core-BotDriver   DIRECTLINE3_WEBSOCKET: true,
  botium-core-BotDriver   DIRECTLINE3_POLLINGINTERVAL: 1000,
  botium-core-BotDriver   DIRECTLINE3_WELCOME_ACTIVITY:
  botium-core-BotDriver    { type: 'invoke',
  botium-core-BotDriver      name: 'TriggerScenario',
  botium-core-BotDriver      value: { trigger: 'Entrypoint', args: [Object] } },
  botium-core-BotDriver   CONFIG: 'botium.json' } +0ms
  botium-core-BotDriver Build - Sources : { LOCALPATH: '.',
  botium-core-BotDriver   GITPATH: 'git',
  botium-core-BotDriver   GITBRANCH: 'master',
  botium-core-BotDriver   GITDIR: '.' } +1ms
  botium-core-BotDriver Build - Envs : { IS_BOTIUM_CONTAINER: true } +0ms
  botium-connector-PluginConnectorContainer-helper Botium plugin botium-connector-directline3 loaded. Plugin version is 0.0.26 +0ms
  botium-connector-directline3 Validate called +0ms
  botium-connector-directline3 Build called +3ms
  botium-connector-directline3 Start called +3ms
  botium-connector-directline3 Directline Connection Status: 1 / Connecting +12ms
  botium-connector-directline3 UserSays called +1ms
  botium-connector-directline3 Posting activity  {
  "type": "invoke",
  "name": "TriggerScenario",
  "value": {
    "trigger": "Entrypoint",
    "args": {
      "brand": "foo",
      "customScheme": "https",
      "tenantName": "covid"
    }
  },
  "from": {
    "id": "me"
  }
} +0ms
postActivity { type: 'invoke',
  name: 'TriggerScenario',
  value:
   { trigger: 'Entrypoint',
     args:
      { brand: 'foo',
        customScheme: 'https',
        tenantName: 'covid' } },
  from: { id: 'me' } }
creating WebSocket wss://directline.botframework.com/v3/directline/conversations/7i9XV0xFMrw6D44pKNoKqI-o/stream?watermark=-&t=ew0KICAiYWxnIjogIlJTMjU2IiwNCiAgImtpZCI6ICJsY0oxTXFpNkdKYXdCZEw5Y0dieEt5S1R6OE0iLA0KICAieDV0IjogImxjSjFNcWk2R0phd0JkTDljR2J4S3lLVHo4TSIsDQogICJ0eXAiOiAiSldUIg0KfQ.ew0KICAiYm90IjogIkh5YnJpZEJvdFN0YWdlIiwNCiAgInNpdGUiOiAiUE5vRUlRSWM4MlEiLA0KICAiY29udiI6ICI3aTlYVjB4Rk1ydzZENDRwS05vS3FJLW8iLA0KICAibmJmIjogMTYxOTA0OTk4NSwNCiAgImV4cCI6IDE2MTkwNTAwNDUsDQogICJpc3MiOiAiaHR0cHM6Ly9kaXJlY3RsaW5lLmJvdGZyYW1ld29yay5jb20vIiwNCiAgImF1ZCI6ICJodHRwczovL2RpcmVjdGxpbmUuYm90ZnJhbWV3b3JrLmNvbS8iDQp9.Ql0tghKYQZ32dWMYRC0zkssnd4ES5cdG_-f6FJOi4fSu0d8zULjJ3s8NujGqTVgCDAC_Q7B6zD1d2hHKZzvOKTvJaSKcjp9Vkbg-QhqIWuChTcnmkmzW93OK6kl6Ld2T11lWRnyS1yjiq2pKk1jqAf8Dl9lwBdMTV6kK6by1-wAbFKj8XV5Z8Sy_ceKaOt8GWKRId6lUInoXnGYX8ihJXVmcmTjMtWAUiu8VK_lvLaTPO54uduGTdn1h7S-b4NffCvvrE2Ffy3vmfi0zajG6dHPOxeUEoKrkJcCq8ZqXIgDtfCnRum0RMMird4bDAwrLDCnGsX4W2wZnPEXFzWU9uw
  botium-connector-directline3 Directline Connection Status: 2 / Online +531ms
  botium-cli-run running testcase give_me_a_picture.convo.txt +2s
  botium-core-Convo give_me_a_picture.convo.txt wait for bot  +0ms
WebSocket open OpenEvent {
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        [Symbol(websocket)]: [Circular] },
     _sender:
      Sender {
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        _bufferedBytes: 0,
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        _queue: [] },
     _socket:
      TLSSocket {
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        _secureEstablished: true,
        _securePending: false,
        _newSessionPending: false,
        _controlReleased: true,
        _SNICallback: null,
        servername: 'directline.botframework.com',
        alpnProtocol: false,
        authorized: true,
        authorizationError: null,
        encrypted: true,
        _events: [Object],
        _eventsCount: 5,
        connecting: false,
        _hadError: false,
        _handle: [TLSWrap],
        _parent: null,
        _host: 'directline.botframework.com',
        _readableState: [ReadableState],
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        server: undefined,
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     _bufferedAmount: 0,
     _isServer: false,
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     _url:
      'wss://directline.botframework.com/v3/directline/conversations/7i9XV0xFMrw6D44pKNoKqI-o/stream?watermark=-&t=ew0KICAiYWxnIjogIlJTMjU2IiwNCiAgImtpZCI6ICJsY0oxTXFpNkdKYXdCZEw5Y0dieEt5S1R6OE0iLA0KICAieDV0IjogImxjSjFNcWk2R0phd0JkTDljR2J4S3lLVHo4TSIsDQogICJ0eXAiOiAiSldUIg0KfQ.ew0KICAiYm90IjogIkh5YnJpZEJvdFN0YWdlIiwNCiAgInNpdGUiOiAiUE5vRUlRSWM4MlEiLA0KICAiY29udiI6ICI3aTlYVjB4Rk1ydzZENDRwS05vS3FJLW8iLA0KICAibmJmIjogMTYxOTA0OTk4NSwNCiAgImV4cCI6IDE2MTkwNTAwNDUsDQogICJpc3MiOiAiaHR0cHM6Ly9kaXJlY3RsaW5lLmJvdGZyYW1ld29yay5jb20vIiwNCiAgImF1ZCI6ICJodHRwczovL2RpcmVjdGxpbmUuYm90ZnJhbWV3b3JrLmNvbS8iDQp9.Ql0tghKYQZ32dWMYRC0zkssnd4ES5cdG_-f6FJOi4fSu0d8zULjJ3s8NujGqTVgCDAC_Q7B6zD1d2hHKZzvOKTvJaSKcjp9Vkbg-QhqIWuChTcnmkmzW93OK6kl6Ld2T11lWRnyS1yjiq2pKk1jqAf8Dl9lwBdMTV6kK6by1-wAbFKj8XV5Z8Sy_ceKaOt8GWKRId6lUInoXnGYX8ihJXVmcmTjMtWAUiu8VK_lvLaTPO54uduGTdn1h7S-b4NffCvvrE2Ffy3vmfi0zajG6dHPOxeUEoKrkJcCq8ZqXIgDtfCnRum0RMMird4bDAwrLDCnGsX4W2wZnPEXFzWU9uw',
     _req: null },
  type: 'open' }
  botium-connector-directline3 Posted activity, assigned ID: 7i9XV0xFMrw6D44pKNoKqI-o|0000000 +540ms
  botium-connector-directline3 received message  {
  "type": "message",
  "id": "7i9XV0xFMrw6D44pKNoKqI-o|0000002",
  "timestamp": "2021-04-22T00:06:27.4023866Z",
  "serviceUrl": "https://directline.botframework.com/",
  "channelId": "directline",
  "from": {
    "id": "HybridBotStage@PNoEIQIc82Q",
    "name": "HybridBotStage"
  },
  "conversation": {
    "id": "7i9XV0xFMrw6D44pKNoKqI-o"
  },
  "recipient": {
    "id": "HybridBotStage@PNoEIQIc82Q",
    "name": "HybridBotStage"
  },
  "text": "BotMessage",
  "speak": "BotMessage\nSelect one of the following options: \n1. I Agree<break/>2. Decline<break/>",
  "inputHint": "expectingInput",
  "attachments": [
    {
      "contentType": "application/vnd.microsoft.card.hero",
      "content": {
        "buttons": [
          {
            "title": "I Agree",
            "type": "imBack",
            "value": "I Agree"
          },
          {
            "title": "Decline",
            "type": "imBack",
            "value": "Decline"
          }
        ]
      }
    }
  ]
} +989ms
  botium-core-Convo give_me_a_picture.convo.txt: bot says (cleaned by binary and base64 data and sourceData) {
  botium-core-Convo   "sender": "bot",
  botium-core-Convo   "media": [],
  botium-core-Convo   "buttons": [],
  botium-core-Convo   "cards": [
  botium-core-Convo     {
  botium-core-Convo       "buttons": [
  botium-core-Convo         {
  botium-core-Convo           "text": "I Agree",
  botium-core-Convo           "payload": "I Agree"
  botium-core-Convo         },
  botium-core-Convo         {
  botium-core-Convo           "text": "Decline",
  botium-core-Convo           "payload": "Decline"
  botium-core-Convo         }
  botium-core-Convo       ],
  botium-core-Convo       "sourceData": {
  botium-core-Convo         "contentType": "application/vnd.microsoft.card.hero",
  botium-core-Convo         "content": {
  botium-core-Convo           "buttons": [
  botium-core-Convo             {
  botium-core-Convo               "title": "I Agree",
  botium-core-Convo               "type": "imBack",
  botium-core-Convo               "value": "I Agree"
  botium-core-Convo             },
  botium-core-Convo             {
  botium-core-Convo               "title": "Decline",
  botium-core-Convo               "type": "imBack",
  botium-core-Convo               "value": "Decline"
  botium-core-Convo             }
  botium-core-Convo           ]
  botium-core-Convo         }
  botium-core-Convo       }
  botium-core-Convo     }
  botium-core-Convo   ],
  botium-core-Convo   "forms": [],
  botium-core-Convo   "messageText": "BotMessage",
  botium-core-Convo   "channel": "default"
  botium-core-Convo } +2s
  botium-core-ScriptingMemory fill start: {} +0ms
  botium-core-ScriptingProvider assertBotResponse give_me_a_picture.convo.txt/Line 1 BOT: BotMessage = UTT_1 ... +3s
  botium-cli-run give_me_a_picture.convo.txt failed: { TranscriptError: give_me_a_picture.convo.txt/Line 1: Bot response "BotMessage" expected to match "UTT_1"
  botium-cli-run     at Convo.Run (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/node_modules/botium-core/src/scripting/Convo.js:256:15)
  botium-cli-run   name: 'TranscriptError',
  botium-cli-run   transcript:
  botium-cli-run    Transcript {
  botium-cli-run      steps: [ [TranscriptStep] ],
  botium-cli-run      attachments: [],
  botium-cli-run      scriptingMemory: {},
  botium-cli-run      convoBegin: 2021-04-22T00:06:25.928Z,
  botium-cli-run      convoEnd: 2021-04-22T00:06:27.462Z,
  botium-cli-run      err:
  botium-cli-run       { BotiumError: give_me_a_picture.convo.txt/Line 1: Bot response "BotMessage" expected to match "UTT_1"
  botium-cli-run           at ScriptingProvider.assertBotResponse (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/node_modules/botium-core/src/scripting/ScriptingProvider.js:145:17)
  botium-cli-run           at Convo.runConversation (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/node_modules/botium-core/src/scripting/Convo.js:437:40) name: 'BotiumError', context: [Object] } },
  botium-cli-run   cause:
  botium-cli-run    { BotiumError: give_me_a_picture.convo.txt/Line 1: Bot response "BotMessage" expected to match "UTT_1"
  botium-cli-run        at ScriptingProvider.assertBotResponse (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/node_modules/botium-core/src/scripting/ScriptingProvider.js:145:17)
  botium-cli-run        at Convo.runConversation (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/node_modules/botium-core/src/scripting/Convo.js:437:40)
  botium-cli-run      name: 'BotiumError',
  botium-cli-run      context:
  botium-cli-run       { type: 'asserter',
  botium-cli-run         source: 'TextMatchAsserter',
  botium-cli-run         context: [Object],
  botium-cli-run         cause: [Object],
  botium-cli-run         message:
  botium-cli-run          'give_me_a_picture.convo.txt/Line 1: Bot response "I\'m Grace, your smart assistant. I can help you find COVID-19 resources. If you’re experiencing a life- or limb-threatening emergency, call 911. I’m not a substitute for professional medical advice, diagnosis, or treatment. Always consult a medical professional for serious symptoms or emergencies. When you agree to our [Terms of Use](https://www.example.com/utility-pages/privacy-policy) and our [Privacy Policy](https://www.example.com/utility-pages/privacy-policy#Privacy_Policy_) we can continue." expected to match "UTT_1"' } } } +2s
    1) give_me_a_picture.convo.txt
  botium-connector-directline3 Stop called +14ms
  botium-connector-directline3 unsubscribed from directline activity subscription +1ms
  botium-connector-directline3 unsubscribing from directline connectionstatus subscription +0ms
  botium-connector-directline3 ending directline connection +0ms
  botium-connector-directline3 Clean called +1ms
  botium-connector-BaseContainer Cleanup rimrafing temp dir /Users/user/botium/DL/botiumwork/My Botium Project 20210421 170624 bH7nn +0ms


  0 passing (3s)
  1 failing

  1) Botium Test-Suite
       give_me_a_picture.convo.txt:
     Error: give_me_a_picture.convo.txt/Line 1: Bot response "BotMessage" expected to match "UTT_1"
########################################
ASSERTION FAILED in TextMatchAsserter - Expected: ["UTT_1"]  - Actual: "BotMessage"
      at wrapBotiumError (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/src/run/index.js:76:12)
      at finish (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/src/run/index.js:205:24)
      at convo.Run.then.catch (/Users/user/.nvm/versions/node/v10.13.0/lib/node_modules/botium-cli/src/run/index.js:218:11)



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        _mask: undefined,
        _fragmented: 0,
        _masked: false,
        _fin: true,
        _opcode: 1,
        _totalPayloadLength: 0,
        _messageLength: 0,
        _fragments: [],
        _state: 0,
        _loop: false,
        [Symbol(websocket)]: [Circular] },
     _sender:
      Sender {
        _extensions: {},
        _socket: [TLSSocket],
        _firstFragment: true,
        _compress: false,
        _bufferedBytes: 0,
        _deflating: false,
        _queue: [] },
     _socket:
      TLSSocket {
        _tlsOptions: [Object],
        _secureEstablished: true,
        _securePending: false,
        _newSessionPending: false,
        _controlReleased: true,
        _SNICallback: null,
        servername: 'directline.botframework.com',
        alpnProtocol: false,
        authorized: true,
        authorizationError: null,
        encrypted: true,
        _events: [Object],
        _eventsCount: 4,
        connecting: false,
        _hadError: false,
        _handle: null,
        _parent: null,
        _host: 'directline.botframework.com',
        _readableState: [ReadableState],
        readable: false,
        _maxListeners: undefined,
        _writableState: [WritableState],
        writable: false,
        allowHalfOpen: false,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: undefined,
        _server: null,
        ssl: null,
        _requestCert: true,
        _rejectUnauthorized: true,
        parser: null,
        _httpMessage: null,
        timeout: 0,
        write: [Function: writeAfterFIN],
        [Symbol(res)]: null,
        [Symbol(asyncId)]: 84,
        [Symbol(lastWriteQueueSize)]: 0,
        [Symbol(timeout)]: null,
        [Symbol(kBytesRead)]: 4159,
        [Symbol(kBytesWritten)]: 1142,
        [Symbol(connect-options)]: [Object],
        [Symbol(websocket)]: undefined },
     _bufferedAmount: 0,
     _isServer: false,
     _redirects: 0,
     _url:
      'wss://directline.botframework.com/v3/directline/conversations/7i9XV0xFMrw6D44pKNoKqI-o/stream?watermark=-&t=ew0KICAiYWxnIjogIlJTMjU2IiwNCiAgImtpZCI6ICJsY0oxTXFpNkdKYXdCZEw5Y0dieEt5S1R6OE0iLA0KICAieDV0IjogImxjSjFNcWk2R0phd0JkTDljR2J4S3lLVHo4TSIsDQogICJ0eXAiOiAiSldUIg0KfQ.ew0KICAiYm90IjogIkh5YnJpZEJvdFN0YWdlIiwNCiAgInNpdGUiOiAiUE5vRUlRSWM4MlEiLA0KICAiY29udiI6ICI3aTlYVjB4Rk1ydzZENDRwS05vS3FJLW8iLA0KICAibmJmIjogMTYxOTA0OTk4NSwNCiAgImV4cCI6IDE2MTkwNTAwNDUsDQogICJpc3MiOiAiaHR0cHM6Ly9kaXJlY3RsaW5lLmJvdGZyYW1ld29yay5jb20vIiwNCiAgImF1ZCI6ICJodHRwczovL2RpcmVjdGxpbmUuYm90ZnJhbWV3b3JrLmNvbS8iDQp9.Ql0tghKYQZ32dWMYRC0zkssnd4ES5cdG_-f6FJOi4fSu0d8zULjJ3s8NujGqTVgCDAC_Q7B6zD1d2hHKZzvOKTvJaSKcjp9Vkbg-QhqIWuChTcnmkmzW93OK6kl6Ld2T11lWRnyS1yjiq2pKk1jqAf8Dl9lwBdMTV6kK6by1-wAbFKj8XV5Z8Sy_ceKaOt8GWKRId6lUInoXnGYX8ihJXVmcmTjMtWAUiu8VK_lvLaTPO54uduGTdn1h7S-b4NffCvvrE2Ffy3vmfi0zajG6dHPOxeUEoKrkJcCq8ZqXIgDtfCnRum0RMMird4bDAwrLDCnGsX4W2wZnPEXFzWU9uw',
     _req: null },
  type: 'close',
  wasClean: false,
  reason: '',
  code: 1006 }
MAC:DL user$ 

The solution mentioned at Botium Amazon Lex - Tests not Reading Utterance files helped to resolve this issue.

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