Today after uploading my latest bike activity, my activity list on Garmin Connect shows the following error message: "Can't create a measurement with NaN value.18 - percentage 17 - difference”.
There were other threads about this. Here is a copy paste from one of them from last December. :
The problem, and solution, remain. I.e., I was getting this error and discovered that my Zone 1 power was 0. Changed it to 1 and the problem went away.
