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

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java.lang.NullPointerException:
at ru.runa.gpd.formeditor.ftl.FreemarkerUtil.transformFromHtml(FreemarkerUtil.java:89)
at ru.runa.gpd.formeditor.wysiwyg.WYSIWYGHTMLEditor.getDesignDocumentHTML(WYSIWYGHTMLEditor.java:414)
at ru.runa.gpd.formeditor.wysiwyg.WYSIWYGHTMLEditor.access$4(WYSIWYGHTMLEditor.java:411)
at ru.runa.gpd.formeditor.wysiwyg.WYSIWYGHTMLEditor$GetHTMLCallbackFunction.function(WYSIWYGHTMLEditor.java:524)
at org.eclipse.swt.browser.External.callJava(External.java:567)
at org.eclipse.swt.internal.mozilla.XPCOMObject.callback3(XPCOMObject.java:266)
at org.eclipse.swt.internal.mozilla.XPCOM._JS_EvaluateUCScriptForPrincipals(Native Method)
at org.eclipse.swt.internal.mozilla.XPCOM.JS_EvaluateUCScriptForPrincipals(XPCOM.java:164)
at org.eclipse.swt.browser.Mozilla.execute(Mozilla.java:1326)
at ru.runa.gpd.formeditor.wysiwyg.WYSIWYGHTMLEditor$UpdateSaveButtonTimerTask$1.run(WYSIWYGHTMLEditor.java:487)
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:4140)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at ru.runa.gpd.Application.start(Application.java:16)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)

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