Why is a search not working in a HUNK dashboard and giving me a Map Reduce error?

[kml_uvce]

I am running a search in a report in HUNK and it's working fine, but when I am running this search in a dashboard, it's giving me a map reduce error. Please let me know what is the issue.

[rdagan_splunk]

Can you give us the details of the Map Reduce error?