I use the default packing slips template and get this error, however when analyzing the network tab in my browser I see this error:
{“errors”:[{“message”:“Internal error. Looks like something went wrong on our end.\nRequest ID: 19308766-4839-4700-bf65-b19186319460 (include this in support requests).”,“extensions”:{“code”:“INTERNAL_SERVER_ERROR”,“requestId”:“19308766-4839-4700-bf65-b19186319460”}}]}