Crash when sharing files stored on nextcloud

### Steps to reproduce

1. Where are you starting? What can you see?
Trying to share a file/image from within a room or file manager (with destination element)

### Outcome

#### What did you expect?
File shared

#### What happened instead?
Crash

[log.txt](https://github.com/vector-im/element-android/files/8067004/log.txt)

### Your phone model

PixelXL

### Operating system version

Android 10 (Lineageos, no Gapps)

### Application version and app store

Element 1.4.0 from F-Droid

### Homeserver

matrix.org

### Will you send logs?

No

* Since I´m not sure this is entirely the fault of element, I´ve opened https://github.com/nextcloud/android/issues/9842 over at nextcloud android client.
* Also tried the same using `Conversations` (xmpp client) and that one did work correctly.