EZ Dashboard error

I created EZ Dashboards for all my rooms. Out of 6 identical fans only 2 work. The other 4 have an error Missing Attributes: speed. How do I fix this? See screenshot's of one that worked and the error I get on the ones that are not working.
I can control all of the fans through the devices tab so I know they do work



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Go to your hub and navigate to Devices page, then compare the "working" fan with a non-working fan, and try to make the "speed" attribute on the non-working fan listed with a value under device states. Pressing the speed or selecting Refresh would probably fix it.