java.util.ConcurrentModificationException

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    • java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:859) at java.util.ArrayList$Itr.remove(ArrayList.java:845) at com.gargoylesoftware.htmlunit.WebWindowImpl.destroyChildren(WebWindowImpl.java:187) at com.gargoylesoftware.htmlunit.TopLevelWindow.close(TopLevelWindow.java:123) at com.gargoylesoftware.htmlunit.WebClient.closeAllWindows(WebClient.java:1975)

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