To fix the formula error in Excel 2016, follow the steps
First, select the green triangle cell and click the Error button. This small button appears beside a cell with a formula error, click the icon and the drop-down list offers the prospect for correcting formula errors and find out more about them.
Or else you can also run the Error Checker.
To run the error checker, go to Formulas tab > click Error checking button (you might need to click the Formula Auditing button first, depending on the size of your screen).
Or to know more about Excel 2016 issues visit: 9 Excel 2016 Issues & Their Fixes That You Can’t Ignore