Uncaught InvalidCharacterError" al conectarse a Anaplan

Al intentar iniciar sesión mediante la autenticación de certificado en el conector Anaplan, puede aparecer el siguiente error:

An error occurred while communicating with the data source.
The web data connector has reported an unrecoverable error and cannot proceed. If the connector has reported details of the error, they are displayed in the pane below.
Error Code: 82BE0673 (Código de error: 82BE0673)
Uncaught InvalidCharacterError: Failed to execute 'atob' on 'Window': The string to be decoded is not correctly encoded.  stack:Error: Failed to execute 'atob' on 'Window': The string to be decoded is not correctly encoded. (No se pudo ejecutar 'atob' en 'Windows': la cadena para decodificar no está correctamente codificada)
  at Object.base64DecodeUnicode (https://connectors.tableau.com/wdc/2/app/dist/wdc-framework-2.29.latest.js:159:53)
  at Object.getBasicAuthString (https://connectors.tableau.com/anaplan/anaplan/1/app/js/modules/anaplan.helper.js:94:26)
  at Object.ajax (https://connectors.tableau.com/anaplan/anaplan/1/app/js/modules/anaplan.helper.js:361:22)
  at Object.getAuthToken (https://connectors.tableau.com/anaplan/anaplan/1/app/js/modules/anaplan.helper.js:649:21)
  at n.<anonymous> (https://connectors.tableau.com/anaplan/anaplan/1/app/js/modules/anaplan.connector.js:1383:20)
  at HTMLButtonElement.r (https://connectors.tableau.com/wdc/2/app/vendors/lodash/lodash-compat/3.10.1/lodash.min.js:26:189)
  at HTMLUListElement.dispatch (https://connectors.tableau.com/wdc/2/app/vendors/jquery/v1.11.3/jquery.min.js:4:8549)
  at HTMLUListElement.r.handle (https://connectors.tableau.com/wdc/2/app/vendors/jquery/v1.11.3/jquery.min.js:4:5252)