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java.lang.ArrayIndexOutOfBoundsException: length=40; index=40	at com.github.mikephil.charting.buffer.BarBuffer.addBar(	at com.github.mikephil.charting.buffer.BarBuffer.feed(	at com.github.mikephil.charting.renderer.BarChartRenderer.drawDataSet(	at com.github.mikephil.charting.renderer.BarChartRenderer.drawData(