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"Time in Heart Rate Zones" for Activity blank

Hello, I am very new to Garmin and the 55 (ie this is my first day and recorded activity).  When reviewing the activity within Garmin Connect, the time in heart rate zone is all zeros (see image).  When I check my watch for the activity, the HR zones all show 0:00.  Any ideas what went wrong?  The activity was just a standard "Run" activity.

I haven't changed any zone data, all are default: