We can upload the bulk images into AEM older version with csv importer. Now we wanted to load the images from local system to AEMaaCS environment with alternative tool The CSV importer is not supported in cloud environment as of now. But as per suggestions from ACS commons the alternative is to use Data importer. But we tried doing it from a sample xlsx sheet and its not working and getting below error. java.lang.UnsupportedOperationException at java.base/java.util.Collections$UnmodifiableList.s...