I have seen two other people report this same problem on this discussion group, but I didn't see any resolution to either. I am also getting this error. I'm sure that the dashboard has been created and saved correctly - I went through each step twice from its original creation. I even scrapped the entire dashboard and started all over again -- same result. Can someone please tell us what is going on here?

Hi,

I am on wave trailhead "Add Key Metrics to Evaluate Your Business" , While I have done requisite for the trail I am getting below error 

"Could not find the correct dashboard state. Please verify the endpoint and results are correct."