How to reproduce

• Go to back-ofice
• Add a page with an article
• In the illustration set an image with filename : "6008160736474408812-account_id=1.jpg"
  (see attachments)
• save

=> the image is not displayed
the URL in previw is : http://......./preview/intranet/_contents-images/ametys-internal%253Asites/intranet/ametys-internal%253Acontents/risques-article/_metadata/illustration/image_max150x150/6008160736474408812-account_id?objectId=defaultWebContent%3A%2F%2F39eb2dcf-2749-4db4-8fb5-73443a1b7507