ERROR running force:source:retrieve: Cannot read property 'getWorkspaceElements' of undefined

Summary

Created a project with manifest and tried to retrieve Wave (Einstein Analytics) components in order to setup source control and CI/CD with them, however, I’m receiving an error in the output.

I am using the sample Developer Edition org provided in Trailhead, so the issue should be easy to reproduce.

Steps To Reproduce:

1. Create a new Developer Edition org with Einstein Analytics enabled - https://developer.salesforce.com/promotions/orgs/analytics-de
2. SFDX: Create Project with Manifest
3. SFDX: Authorize an Org from step 1.
4. Change the manifest/package.xml content with below
5. Right click on package.xml and execute SFDX: Retrieve Source in Manifest from Org

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
    <types>
        <members>*</members>
        <name>WaveApplication</name>
    </types>
    <types>
        <members>*</members>
        <name>WaveDashboard</name>
    </types>
    <types>
        <members>*</members>
        <name>WaveDataflow</name>
    </types>
    <types>
        <members>*</members>
        <name>WaveDataset</name>
    </types>
    <types>
        <members>*</members>
        <name>WaveLens</name>
    </types>
    <types>
        <members>*</members>
        <name>WaveRecipe</name>
    </types>
    <types>
        <members>*</members>
        <name>WaveXmd</name>
    </types>
    <types>
        <members>*</members>
        <name>WaveTemplateBundle</name>
    </types>
    <version>45.0</version>
</Package>

Expected result

All Wave* components from the org should have been retrieved, and the command should exit with code 0 (i.e. without any errors).

Actual result

Some (or all? Not sure how to verify.) wave components get retrieved into force-app/main/default/wave and force-app/main/default/waveTemplates folders, the command exits with code 1 and the below error is reported in the output:

14:50:36.562 sfdx force:source:retrieve --manifest f:\SF\test\manifest\package.xml
ERROR running force:source:retrieve:  Cannot read property 'getWorkspaceElements' of undefined
14:50:50.842 sfdx force:source:retrieve --manifest f:\SF\test\manifest\package.xml ended with exit code 1

VS Code Version:

Version: 1.33.0 (system setup) Commit: 0dd516dd412d42323fc3464531b1c715d51c4c1a Date: 2019-04-04T15:14:28.026Z Electron: 3.1.6 Chrome: 66.0.3359.181 Node.js: 10.2.0 V8: 6.6.346.32 OS: Windows_NT x64 10.0.17763

SFDX CLI Version:

bash-4.3$ sfdx -v
sfdx-cli/7.3.0-94ecf2d5ee win32-x64 node-v10.15.3

OS and version:

Microsoft Windows 10 Pro 10.0.17763

[geraemartinez]

if you have this in your package.xml it does n’t work

<types>
        <members>*</members>
        <name>ApexTestSuite</name>
</types>

but it was working…

[AQTectonic]

I am also getting the same error while running sfdx force:source:retrieve -x Package.xml