NullPointerException error

I am getting this error please help

java.lang.NullPointerException: Cannot invoke "java.lang.Integer.intValue()" because the return value of "java.util.Map.get(Object)" is null
at org.fog.mobilitydata.DataParser.parseResourceData(
at org.fog.placement.LocationHandler.parseResourceInfo(
at org.fog.test.perfeval.CardiovascularHealthMonitoringApplicationEdgeward.createFogDevices(
at org.fog.test.perfeval.CardiovascularHealthMonitoringApplicationEdgeward.main(


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