java.lang.OutOfMemoryError: Java heap space
   at java.util.Arrays.copyOf(Arrays.java:3332)
   at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
   at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
   at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:421)
   at java.lang.StringBuffer.append(StringBuffer.java:272)
   at org.json.simple.JSONValue.toJSONString(JSONValue.java:176)
   at org.json.simple.JSONObject.toJSONString(JSONObject.java:119)
   at org.json.simple.JSONObject.toJSONString(JSONObject.java:101)
   at org.json.simple.JSONObject.toJSONString(JSONObject.java:108)
   at org.json.simple.JSONValue.toJSONString(JSONValue.java:199)
   at org.json.simple.JSONObject.toJSONString(JSONObject.java:119)
   at org.json.simple.JSONObject.toJSONString(JSONObject.java:101)
   at org.json.simple.JSONObject.toJSONString(JSONObject.java:108)
   at org.netbeans.modules.web.webkit.debugging.spi.Response.toString(Response.java:112)
   at org.netbeans.modules.web.webkit.debugging.TransportHelper$Callback.handleResponse(TransportHelper.java:285)
   at org.netbeans.modules.extbrowser.plugins.ExternalBrowserPlugin$BrowserPluginHandler.handleDebuggerResponse(ExternalBrowserPlugin.java:499)
   at org.netbeans.modules.extbrowser.plugins.ExternalBrowserPlugin$BrowserPluginHandler.read(ExternalBrowserPlugin.java:330)
   at org.netbeans.modules.netserver.websocket.WebSocketHandler7.readDelegate(WebSocketHandler7.java:118)
   at org.netbeans.modules.netserver.websocket.AbstractWSHandler7.read(AbstractWSHandler7.java:185)
   at org.netbeans.modules.netserver.websocket.WebSocketServerImpl$WebSocketHandler.read(WebSocketServerImpl.java:207)
   at org.netbeans.modules.netserver.SocketFramework.readData(SocketFramework.java:179)
   at org.netbeans.modules.netserver.SocketFramework.process(SocketFramework.java:153)
   at org.netbeans.modules.netserver.SocketServer.process(SocketServer.java:106)
   at org.netbeans.modules.netserver.SocketFramework.doRun(SocketFramework.java:137)
   at org.netbeans.modules.netserver.SocketServer.run(SocketServer.java:77)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)