If you launch the Respondus Lockdown Browser dashboard in your course and receive an error, this is due to an image (bitmoji) in the quiz names.

The original template used for sandboxes and migrated courses had two quizzes with images in the title (Respondus Practice Quiz and Policy Validation Quiz). This was fixed in the academic template, but these old versions can come in when content is imported from sandboxes.

To fix this issue:

Click on quizzes in your course navigation to view ALL quizzes in your course--not just those in your modules.
Rename any quiz with an image in the title. (Edit the quiz and delete the image from the name).
Re-launch the Respondus Lockdown Browser.

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Sample