[Affected versions]:

• Firefox Release 64.0.2 and above
• Chrome 71.0.3578.98

[Affected Platforms]:

• All Windows
• All Mac
• All Linux

[Prerequisites]:

• Have a new Firefox profile created.
• Have an experiment created with an "Yes" risk radio button checked on the "https://experimenter.stage.mozaws.net/" website.
• You are logged in your LDAP account.

[Steps to reproduce]:

1. Open the browser with the profile from prerequisites and navigate to "https://experimenter.stage.mozaws.net/".
2. Open the experiment from prerequisites and click the "Edit" button from "Risks" section.
3. Delete the text from the "Risk" input field.
4. Click the "No" radio buttons for the questions that have the "Yes" radio button checked.
5. Click the "Save Draft and Finish" button from the bottom of the page and observe the behavior.

[Expected result]:

• The experiment is saved and you are redirected to the main page of the experiment.

[Actual result]:

• Nothing happens.

[Notes]:

• After pressing the "Save Draft and Finish" button an error is displayed in the Chrome browser's console. Here is a screen shot with the browser console error:
  
• Attached is a screen recording of the issue: