Not sure what I overlooked

[acidhorse1972]

Exception in thread "Thread-10" java.lang.NullPointerException: Cannot invoke "java.lang.Integer.intValue()" because the return value of "java.util.HashMap.get(Object)" is null
at com.ameliaWx.radarView.RadarView$CheckOnlineThread.checkSitesOnline(RadarView.java:783)
at com.ameliaWx.radarView.RadarView$CheckOnlineThread$1.run(RadarView.java:683)
at java.base/java.lang.Thread.run(Thread.java:833)
waiting for model
rinse repeat...