hey even i am getting the same warning message. Not able to make out Why this is happening . If someone has an answer for this please update.Thanks,Pratap

Thank you for the reply . I went through the link but there is no mention of export to csv . 

Hi ,I was working on AEM 6.2 asset report page and i found that export-toCsv is working without clicking the generate-report button.Is this an issue in 6.2 ?? because in 6.1 it was like i could export-to-csv only after the generation of report.