java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at org.eclipse.core.internal.net.StringUtil.split(StringUtil.java:33)
at org.eclipse.core.internal.net.ProxyType.convertPropertyStringToHosts(ProxyType.java:102)
at org.eclipse.core.internal.net.ProxyManager.getNonProxiedHosts(ProxyManager.java:118)
at org.eclipse.ui.internal.net.NonProxyHostsComposite.getProxyBypassData(NonProxyHostsComposite.java:344)
at org.eclipse.ui.internal.net.NonProxyHostsComposite.initializeValues(NonProxyHostsComposite.java:283)
at org.eclipse.ui.internal.net.NonProxyHostsComposite.createWidgets(NonProxyHostsComposite.java:133)
at org.eclipse.ui.internal.net.NonProxyHostsComposite.(NonProxyHostsComposite.java:66)
at org.eclipse.ui.internal.net.ProxyPreferencePage.createNonProxiedHostsComposite(ProxyPreferencePage.java:89)
at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:241)
at org.eclipse.jface.preference.PreferenceDialog.createPageControl(PreferenceDialog.java:1450)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.preference.PreferenceDialog$9.selectionChanged(PreferenceDialog.java:670)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:874)
at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1243)
at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1269)
at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:259)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4024)

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