Upload Excel Workbook to Workspace Workbook Will Not Open

Hi,

I uploaded an Excel Workbook to a Workspace.

However, I cannot open the workbook.

When I click the Workbook in the Workspace, I get an error message:
"Couldn't open the workbook.

We're sorry. We couldn't open your workbook. You can try to open this file again, sometimes that helps."

I click OK on the message, I am left with a blank Excel Online screen/canvas.

I tried again to open the workbook, same error message.

I tried to open a different Excel Workbook that I uploaded to the workspace, same error message.

Any ideas here?

Thanks,

-w