Projection Tool reporting "0 Cores used"
see attached image
It was determined that the chart is working as it was designed.
What the tool is saying is that by the projected date, with the current trend, you’d have 0 cores used.
The confidence interval of +-181 is quite large due to the volatility in core usage.
This prediction is not ideal but was caused by a fairly steady decrease in cores used in your environment observed over a period of time.