Error while using Spring STS Starter Wizard - eclipse

Question

I create a lot of Spring boot apps and I like to use Spring STS starter wizard to get me going, but all of a sudden today I started seeing an error window popup every time I try to open the "Spring Starter Wizard".
STS version: 3.7.2
Here is the error in the popup window.
Here is the error that I see in the logs.
java.lang.Error: java.io.FileNotFoundException: http://start.spring.io
12129 at org.springframework.ide.eclipse.wizard.gettingstarted.boot.NewSpringBootWizard.init(NewSpringBootWizard.java:75)
12130 at org.eclipse.ui.internal.actions.NewWizardShortcutAction.run(NewWizardShortcutAction.java:119)
12131 at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
12132 at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
12133 at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
12134 at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
12135 at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
12136 at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4230)
12137 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1491)
12138 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1514)
12139 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1499)
12140 at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1299)
12141 at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4072)
12142 at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3698)
12143 at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
12144 at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
12145 at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
12146 at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
12147 at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654)
12148 at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
12149 at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
12150 at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
12151 at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
12152 at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
12153 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
12154 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
12155 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
12156 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
12157 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
12158 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
12159 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
12160 at java.lang.reflect.Method.invoke(Method.java:483)
12161 at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
12162 at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
12163 at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
I tried accessing http://start.spring.io/sts through my browser and I get this message.
404 Not Found: Requested route ('start.spring.io') does not exist.

Answer 1

You have to change the network setting in the STS.
Select Window Tab -> Preferences -> General -> Network Connection and
change the setting.
Set Active Provider to manual then edit the host and port details in proxy entries. Apply the setting and click ok.
This worked for me. Hope it works for you.
Thank You

Answer 2

This issue has resolved now. It seems there was some issue with http://start.spring.io/sts. It is back up now.