Creation of a new project causes HTTP 500

[Simon Riedener]

Describe the bug
When I try to create a new project, A HTTP 500 Error occurs (error page) when I click on the Save button.

To Reproduce
I did the following steps to get the white error page with HTTP 500

1. Go to the Dashboard
2. Click on Projects link
3. Click on New Project button
4. Enter the form and click on Save

Unfotunately the whole project page is broken now. After my try to create a new project, I get the HTTP 500 error whenever I try to enter the projects view now.

Expected behavior
The project view can be displayed again, and a new project can be created without causing the same error again.

Screenshots
White page with Text "Server Error (500)"

[Aaron Riedener]

duplicate of #231