Hello,

When I click on "Check Challenge" I get below error :
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I am getting the following error when Refreshing Sales Data through Trailhead Data Manager:
"An error occured in your last data refresh.
Insert failed. First exception on row 78; first error: INVALID_CROSS_REFERENCE_KEY, Owner ID: owner cannot be blank: [OwnerId]"

I was following the steps in trailhead: https://trailhead.salesforce.com/trails/wave_analytics_apps/modules/wave_apps_basics/units/wave_apps_creating_wave_apps