Bug on accessing platform & devices for non-logged-in users

Summary

There is a bug when a user opens the 'platforms-and-devices' tab of a configuration. The configuration has a mounted device for the selected datetime (now).

Steps to reproduce

Open a page like http://rz-vm64.gfz-potsdam.de/configurations/36/platforms-and-devices without being logged in.

What is the current bug behavior?

In chrome the page stops rendering:

What is the expected correct behavior?

It should show the tree as usual, but without edit options:

Some logs and/or screenshots

Possible fixes

I expect this in the code to read the email that is given to the sub components (to set the current user as the contact when the user clicks the button for this function. When the user is not logged in, there is no user object to access this value.

ToDo's

• Bug reproduced
• Cause found
• Bug fixed