I am having problem uploading the CSV grid I have generated in Google Earth. My attempt to load it shows the following error Problems generating the kml file: freemarker.core.invalidReferenceException freemarker.core.invalidReferenceException:The following has evaluated to null or missing ==>placemark.extrainfo[0][in template "kml_template.fmt"]

I am having problem uploading the CSV grid I have generated in Google Earth. My attempt to load it shows the following error Problems generating the kml file: freemarker.core.invalidReferenceException