To resolve the Handlebars.js error that you are experiencing, it is recommended that you add cq.tsdk.handlebars as a dependency to the clientlib folder    

I have created the content fragment and content fragment variants programmatically based on the data present in the map.   public static void createVariations(ResourceResolver resourceResolver, String variationTitle,Map<String, Object> variationData, String fragmentTitle, String pagePath, SlingHttpS...

The requirement is create the content fragment programmatically and update the master and child variants data dynamically while iteration.

This issue might come because of the core components.If the core components are not compatible with the AEM version this issue will arise.