Nextcloud app iPhone

I have installed NextCloudPi_RPi_07-20-19 on Raspberry 4, then I have upgraded it to the latest version. Everything works properly except for an error message inside the trash / recycle folder on the nextcloud app for iPhone. Request Failed: Not found (404) In the web interface this works perfectly, but not in iOS. When I delete something in the app, this does not get into the trash / recycle folder.