Subscribe to calendar doesn't create link

Summary

Trying to subscribe to a calendar doesn't generate the necessary link (the field is blank)

Steps to Reproduce

1. Create or go to an existing calendar
2. Click the 3 dots after the name of the calendar on the right and select the "Subscribe" option

Expected Results

A link should be generated and displayed in the field

Actual Results

The field is blank

Workaround

If possible, go to Team Calendars' Global Settings and select the "Disable Private URLs" check box then try to subscribe to it again.