Error(s) occur when reading checkpoint.

[uppukumar]

Hi All,

I am trying to create a chart with following query from java script, But i am not able to get the data means it is showing no results.

when i am trying to get the data from App:splunk DB Connect--->Input-->clicked on one input,
Then it is showing "Error(s) occur when reading checkpoint"

Below is the query i am using
"index=\"redshift\" source=\"mi_input://RASDB-Input-sesonsCount-$nodeIP$\" GROUP_NAME!=\"NULL\"|sort _time|eval TIMESTAMP=strftime(strptime(TIMESTAMP,\"%Y-%m-%d %H:%M:%S.0 %Z\"),\"%b %d %Y %H:00:00\")|dedup TIMESTAMP,host|table TIMESTAMP,GROUP_NAME"t

Thanks