### Steps to reproduce

1. Begin of the insertionLogin as an adminEnd of the insertion Begin of the deletion <br>End of the deletion

2. Begin of the insertionGo to Administration &gt; FilesEnd of the insertion Begin of the deletion <br>End of the deletion

3. Begin of the insertionAdd and setup a nextcloud storage

4. After the setup is finished, click on `Open file storage` hyperlinkEnd of the insertion Begin of the deletion <br>End of the deletion


### What is the buggy behaviour?

* Begin of the insertionUser sees a json errorEnd of the insertion Begin of the deletion <br>

* <br>End of the deletion


### What is the expected behaviour?

1. Begin of the insertionFile storage is openedEnd of the insertion Begin of the deletion <br>

2. <br>End of the deletion


### Important note

Begin of the insertionIt happens regardless of the auth method
It doesn&#39;t happen for OneDrive storage hyperlinksEnd of the insertion Begin of the deletion <br>End of the deletion

###

### Screenshots and other files

Begin of the insertion<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/742876/content">End of the insertion Begin of the deletion <br>End of the deletion

### Environment information

**OpenProject version**

Core build

[c437f656c62a393a540ce56cc8faf531b88bb9e4](https://github.com/opf/openproject/commits/c437f656c62a393a540ce56cc8faf531b88bb9e4)

Product version

[9dc68af31aec49770dba96a0d327f1786f00be52](https://github.com/opf/saas-openproject/commits/9dc68af31aec49770dba96a0d327f1786f00be52)

Core version

OpenProject 16.3.0

**Browser**

* [ ] Chrome
* [x] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)