A few weeks ago I have created a repository for our subversion hosted project. After creation we were able to use the review board correctlt. Suddenly we cold no longer create review requests for that project. 
On editing the repository configuration the repository type and path were no longer set. However, when I try to set them I get an error.


What version are you running?
7.0.2

What's the URL of the page containing the problem?
https://codereview.dev.mediagrif.com/admin/db/scmtools/repository/9/change/
What steps will reproduce the problem?

Edit existing repositoy
Set repository type to Subversion
Set path to :http://subversion.dev.mediagrif.com/jms
Save
Try to reset the 


What is the expected output? What do you see instead?
The repository should be saved, but I get the error : Select a valid choice. subversion is not one of the available choices.
The repository type changes back to Bazaar. When trying to change it to Subversion, Subversion is no longer available.
I have set the path and save the repository configuration for the repository type subversion to become available once again in the combo box.

What operating system are you using? What browser?
Microsoft Edge for Business Version 130.0.2849.80

Please provide any additional information below.
It is the second time that this happens with this project repository. I had to delete the last configuration and recreate a new one for it to work.