Experience Analytics aggregating error

 Hello friends,

We are seeing lot of (80% of log file is generated with this warning) warning messages as given below.

WARN  [Experience Analytics]: An error occurred while aggregating the channel dimensions.Experience Analytics was unable to retrieve the channel information for the channel item ID b418e4f2-1013-4b42-a053-b6d4dca988bf. Ensure that you have deployed the marketing definitions correctly.

When we searched the id b418e4f2-1013-4b42-a053-b6d4dca988bf, it is the item that comes with experience analytics solution and its path is /sitecore/system/Marketing Control Panel/Taxonomies/Channel/Online/Direct/Direct

So I am not sure why these many warnings are generated in the log files, not sure what is breaking behind the scenes.

Can anyone guide me , what to look for to get rid of these warnings.

we are using Sitecore 8.2 update 1.