[01:29:19] [Asynchronous Worker #1 thread/CRITICAL]: Error: "Call to undefined method pocketmine\level\generator\normal\biome\PlainBiome::getColor()" (EXCEPTION) in "/plugins/MyPlot-master/src/MyPlot/MyPlotGenerator" at line 104 [01:29:19] [Server thread/CRITICAL]: Could not execute asynchronous task PopulationTask: Task crashed
Try the latest API3 branch build from this update version of MyPlot by @jasonwynn10: https://poggit.pmmp.io/ci/jasonwynn10/MyPlot/~