Fatal error: Uncaught Error: Call to undefined function exp_isProjectVariant() in /home/datadir/applications/econome-dev/API/V2_explore/exp_measure_variant/DELETE-variant.php:6 Stack trace: #0 {main} thrown in /home/datadir/applications/econome-dev/API/V2_explore/exp_measure_variant/DELETE-variant.php on line 6