错误

Layer 2: Tile error: Reprojection output too large (10277x10480 pixels).

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Layer 2: Tile error: Reprojection output too large (10150x10479 pixels).

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Output of image computation is too large (18 bands for 3150625 pixels = 240.4 MiB > 80.0 MiB).

如果我把它增加到 "40"，代码就会运行，但不知为什么，"cultation_percentage "不是 0 就是 1，而不是预期的 nul.point.something？谁能告诉我哪里做错了？ 

原始代码链接

https://code.earthengine.google.com/652a7acd777e2d444dbe80b7fb543e79

代码：

var dynamicWorld = ee.ImageCollection("GOOGLE/DYNAMICWORLD/V1")
var modisET = ee.ImageCollection('MODIS/061/MOD16A2GF')var landCover = dynamicWorld.filterDate(ee.Date('2016-01-01'),ee.Date('2016-01-01').advance(6,'month')).median();
var et = modisET.filterDate(ee.Date('2016-01-01'),ee.Date('2016-01-01').advance(6,'month')).select('ET').median().multiply(0.1);
var cropland = landCover.select('label').eq(4)var croplandMask = cropland.setDefaultProjection(dynamicWorld.first().projection())// .reproject({crs: 'EPSG:4326',scale:40})