java.io.IOException: Connection failure with 401

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java.io.IOException: Connection failure with 401
at sun.plugin.protocol.jdk12.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.plugin.cachescheme.PluginURLConnection.downLoadFile(Unknown Source)
at sun.plugin.cachescheme.PluginJarCacheHandler.downloadJarFileToCache(Unknown Source)
at sun.plugin.cachescheme.PluginJarCacheHandler.cacheHandler(Unknown Source)
at sun.plugin.cachescheme.PluginJarCacheHandler.getJarFilesPath(Unknown Source)
at sun.plugin.AppletViewer.loadJarFiles(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

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