### Before filing a report

### Steps to reproduce

1. Open the Backlogs module in the Scrum project
2. Create a new version for the left column, without a selected wiki page
3. Click on Begin of the insertionWikiEnd of the insertion Begin of the deletion Wiki End of the deletion

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/90591/content">

### What is the buggy behavior?

* internal server error

### What is the expected behavior?

* it should show the wiki page Begin of the insertion

### Workaround

Go into the project settings and edit the version there, assigning a wiki page you created by hand.End of the insertion

**OpenProject version**

_v13.2.1_