Microsoft has released the October 2016 CU for SharePoint server 2013 and it’s available for download from the below mentioned link .
As previously mentioned in my blog, the fix for the “Follow count web part” issue has been included on this CU. You can verify that by taking a look at the “Improvement and Fixes” section of this CU.
Improvement and Fixes: _ https://support.microsoft.com/en-us/kb/3118355
So the bottom line here is , if you’re facing the “ Follow count web part “ issue in your environment where-in clicking on the “Follow count web part” throws you an error stating “Followed Count Web Part can’t be displayed because of null reference exception” then patching your environment with October 2016 CU should fix it .
Happy SharePointing !!! Thanks for reading this post .