Error loading Bynder Assets with special Characters in it (|)

Steps to reproduce

1. Setup bynder external DAM with proxyMode enabled
2. Select an Bynder Asset that contains a | (pipe character)
3. Generate a link to it in Freemarker
4. Load the HTML Page

Expected results

The Image should load as other images that do not contain a special character

Actual results

The link to the image returns a 400 Bad Request HTTP error

Workaround

Disable proxyMode (but then it is not possible to get links to the bynder derivates/renditions)

Development notes

The Proxy that is generating links should check for special characters and handle them correctly. I.E. URL-Encode them