Getting an error: "The 'Sales Rep Win Rates' report chart does not appear to be using a vertical bar chart."  I have removed the "closed date" on the graph, redid that graph & redid the challenge. Please help :(

Getting an error: "The 'Sales Rep Win Rates' report chart does not appear to be using a vertical bar chart."  I have removed the "closed date" on the graph, redid that graph & redid the challenge. Please help :(

Can someone help me?

I keep getting this result: "The 'Sales Rep Win Rates' report chart does not appear to be using a vertical bar chart" although the report dóes show a vertical bar chart.
It's in:  "Create Reports and Dashboards for Sales and Marketing Managers; "Visualize Your Data"

I tried by doing the whole trail again in a fresh/new dev org, but keep getting the same result.