QnA Embedding error

Here is the basic client-side code you need. Note you must include an array of dataset IDs. The irony here is that you can only pass a single dataset ID in the array as the support for embedding the QnA experience with two or more datasets is not there yet.

// Get data required for embedding
var datasetId = "5c82edbf-46a1-48f3-b337-3ef12c69a94b";
var embedUrl = "https://app.powerbi.com/qnaEmbed?groupId=54afb565-3935-47e1-9a89-67e48a78ca45";
var accessToken = "H4sIAAAAAAAEACWWxa7FCnJF_-VNHclMkXpgPGbmmZmZHeXfc9M93zWopdpL9T__WOk7zGnxz3__U8EzQUY04RjVWIYpMwKv6NR4U7FNHbCV1qbNUbN48dbg0PSQstyrkBXV25ahPKxc-7mfWFQhpoaJU0lA-wLlrOKr0lGwQmN-nLTffMaLJfVoh9M6ySHrgWtsEduTnVw6rAXR7tIuAhDpRhpqK5CzaL8Ex3YB9NS4168EEIrlYW1HfqJRkNRDoDs0NL7hNZvMLYV0_ejI5KeeiU4YcnT4fXK4EANuHU9BVq2EVoBSdPN6a-aVASuUiBrzCN_iC7gr3UZi-MHaO225PqY2J_rQvN6J7AMZfj-sTfnCFvDfocpLPt6YL_sCyw0wQ3lzx2rcZSk53A-eQQDx2R5DZKaTg6fNGXza9QrSJAFqT1GeqKoPjNudfn_RceRocM36pidVsz7iRxLCyKEXCvhdXyJm9YUFA7C-X_fCuwO8KpsmjIvUWjcxqu6XhUG1pC-pSXOkSXTwGNPCxAIICY3zyrJiOuF9tS1jVQsaUS93z2oq0GzhuY_ZUYBv-xRHaE4v_sE1RnSp49aqV8E3EKlmUcJhG9Z4yavmLcR8IxmSPS99V5x6RTLqnN_ZIttjzLNKH-sChSBUrp4GPGDLR756tj9Gk9pbuZSMuGdGZMjQmrR1JOg2gAxNRyN8hDBOzV-ea_tvD4YiD9yFXclpc3kBMsLmp7BxZX7A8lv-cHblqJ7y9iuR6AftRkV7KH4CdFdSG_8xLBEgz8BxCZG4qpd03Irfpn5oytjHpZA9UqnwgYklm292Q_3GSxAZjOG0FKVX_QFQ0ao5tREMNoNxZUo1peW4AhN4DROC9ROnAPPtwkmCDWQnp0g36IKCI3sPuqGV8TvU2vfZOQibNCMubCW1Hr4Hf4vJUzNMK9rcdwVpnQDgqJyxuj2lYhTEb2ioWI7M1w8aLknfPl2OqPZDJXlLebxesRTnKriJWY24vuPLiS_k8r8e4m5-MQakQ2bwO3Cs_hGNv8KBxAgdmvBFc7MbOykEuKxI6AjFfq-Q31CDhsUqwh7aormjgG4WDYStatGeM3YbXmsckkNMMGmKAfgOn2e-XN6ealWV2zOpAgovfvopiz5py7DWIjLs5VvD6f5SfPcR9utrbX3ePVKYDfIJHGHNncmDxW4VHTXQy1cW1OOL0eedgb9ehEQs4f15tRRE9Wqu5ZfwbniuHKMJ81BJIV_z5ghmT9CDSMQvHVn5ooj5RRgM5OumDbnksS5bSawwzist7oO3cZB2Ihx2GM9vWuDa0UsYX6fdgZnDQSug-zSQri5-FakogTy1ez1NTJdDmjGx8E2lgSw2A77MEBwCztpSixF9kyx05SCJxuWT8aonmCmC_nUiIEQ2s5IHoXossfbwPgDKiA8xMi3XJ-OljE1wUPAy_thGu7yUXhVLbzldz09e6NCbi-k4AbxAmFO6gRPd1ZCpQwXHoPnnhoDrGbxRHqWmQ0oB7wAE-3kOcEbrmMgP6QXQHAeSv9l4RGwovz6bGPOSIkAllSnkmX3tJFBDHvl-wyzo_lM855I9WBVJMXuUobvR2FCkJBaClKXKmqLA7xBtiBtCiRY_S3hSUI_9L43Pq_T-TL1Y11YxDEHTtiEn34X9xIXCrnVd-GptewTksRu0FaFYmiNT5GJQJPe4GRyOZksjzV-fqY7QZi_IHSSbH7-C4SHHj78GyOXMiMkwYmDjnAtGWLJkisiSiJYypEMwOBrWjYp6mDFnaRkA9pN9-dIimHkOBvqmvGLj1IizOxCdxELsgOkQri6dDG4IpTkBSLX5ELYryi7IRsOng0xmS8v-aBoLps1HxCYgyCalFYeDJ8OS8TxmLbj6hWlbs5LADUNzYAacGKK3rx-Zg2EOlV6sdzx9paVrBoWevS-G3uAME6e6zIsizZw83JVI_IlHkky5Pbn0zEgNhJRdOGV1TeI4d9CFLHIjvoaU_I4RuE_OEGk_5vmtFsNf9SEZSekEwLg0u77xVkrs9s-GC1nVOZnYihYfOgadgqlBAnzStVAwFkB2nb_GOVnWkD881DtjuipD0LY_3YBRe9olvY2DH7gNTAv7pHhg-0lQS_t2TRlcw0v841CGwPqx7vxZpO6LV-w_PuOR2MkUz2-dtxd1u3jpu1EsGkooq4r7XwmBm8NFPn_htG9NNDNgXYS7rPhayBQvNzN6l63Kcv7-qg4Mj5S6856kDwJ-U5gFY65j2CWZ58re541Wftiy64zL_vxc_YCOMyDzaxg52g3KkfYWoAytE-vVLcU1btqEMbwrs4kF_rbejKNLzXS22mfyZ85bpQr3v_71z3_9w23vcsxq-f69OdyA6KjeMBNabDMmT7iAyQmzoed7v_P-Auhy2tdWlD7Xc4_TWz7O13Q2AQvHA6e0Bs3utK6ZpyfgPGF2rOfGbPac5n45hJf7_OKxyevbJJiAc_vUR-Gf73wUBqeKxhVIH2FPScz01ZEKuavEvHlcFbuFlCJBpPbpjBTGsFrFcCDtODIs9ng_i31ob21iXscTnuvJTHmU4irKPOvx0aXjzKLRj1vpd6KsUaLPqnp6uN23fGPleA6SWW_Po5L4eUJ3r5m4VdCSv5mRVJ1tQe_XWPKt7xryekToZzRWKdgENUxNFG0oRCepVgkLl0jpdr7qaIWaq9oaEFbXFNXtM5zNSnL2fzC_S1NucvBHOX8Vouyh159Ck1mRE6l1WKz_nXLbekqPcyv_YiWs9EqC7M55Wj8KDoXmBG_X3g8SGIrIAYJ3j3eOsTmcJn5CBhOh1vINhSpffWxToBESoWwUuMtTmRTE9kQI4IzJdHaLGb3llrhUPjRZUCXObVtgl7xDdVHr9ZvuoN7y86Pw5Ei3QTjlG8iEKbV1Wy0aoMNcUvcV__l6c6w873nBP7UK9SDmvwenRUn8fHOYf32OnhF0x28bBdqZR_aZWMncXxw_-hL4qDZYGOW5XM7HjmKuo6Ut4xPwpwOxoHzgqU9HlFHvxh8Zj6IL8c9i91XS17I8vDeD1lDjffrAgqHEfsPz6Rv9OyqRO32Euxo_42Gf_MWRNKlT3CEZSyBqFEnH_9_8__4fQpW8SNoLAAA=";

// Get models object to access enums for embed configuration
var models = window['powerbi-client'].models;

var config = {
  type: 'qna',
  tokenType: models.TokenType.Embed,
  accessToken: accessToken,
  embedUrl: embedUrl ,
  datasetIds: [ datasetId ],
  viewMode: models.QnaMode.Interactive
  //,  question: "What is sales revenue by quarter and sales region as stacked area chart"
};


// Get a reference to the embedded report HTML element
var embedContainer = document.getElementById('embedContainer');

// Embed the report and display it within the div container.
var embeddedObject = powerbi.embed(embedContainer, config);

Also, if you are using the app-owns-data model with embed tokens, you must create the embed token by passing the target dataset ID.

public static QnaEmbeddingData GetQnaEmbeddingData() {

  PowerBIClient pbiClient = GetPowerBiClient();

  var dataset = pbiClient.Datasets.GetDatasetByIdInGroup(workspaceId, datasetId);

  string embedUrl = "https://app.powerbi.com/qnaEmbed?groupId=" + workspaceId;
  string datasetID = dataset.Id;

  GenerateTokenRequest generateTokenRequestParameters = new GenerateTokenRequest(accessLevel: "view");

  string embedToken = pbiClient.Datasets.GenerateTokenInGroup(workspaceId, 
                                                              dataset.Id, 
                                                              generateTokenRequestParameters).Token;

  return new QnaEmbeddingData {
    datasetId = datasetId,
    embedUrl = embedUrl,
    accessToken = embedToken
  };

}