It shows "Failed to display the graph." and unable to display the storage volume in use. November 25, 2020 05:56 Updated The message appears when your browser disables "Flash". Please change the browser settings to allow using "Flash" on it. Related articles If I answer a questionnaire multiple times from the same device, is the response result overwritten? Where can the amount of storage being used be checked? What logs can be checked in the History? Is it possible to update multiple items of content by batch update? A "PDF error" appears when importing a PDF file.