@lwang : Please check the thread below for the reference.
I also faced that issue long time back in AEM 6.4 then we used the path
field in multi-field instead of drag-and-drop 1. Background image for
the hero image - You can use the drag and
drop(cq/gui/components/authoring/dialog/fileupload)2. A logo image on
top of the background image. (Which can be multip...
Error means something wrong with your datastore. Either the user
running AEM does not have permissions to the
crx-quickstart/repository/datastore folder or something else going on
with the datastore.  error: java.lang.RuntimeException: Error
occurred while obtaining InputStream for blobId