NPE in PHPDebugPreferencesBlock because of null server

[merks]

Describe the bug

Visiting all pages in the PHP EPP product, this error appears in the log:

eclipse.buildId=4.30.0.20231123-1200
java.version=21.0.1
java.vendor=Eclipse Adoptium
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.php.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.php.product

org.eclipse.jface
Error
Fri Nov 24 09:13:58 CET 2023
Problems occurred when invoking code from plug-in: "org.eclipse.jface".

java.lang.NullPointerException: Cannot invoke "org.eclipse.php.internal.server.core.Server.getName()" because the return value of "org.eclipse.php.internal.server.core.manager.ServersManager.getDefaultServer(org.eclipse.core.resources.IProject)" is null
	at org.eclipse.php.internal.debug.ui.preferences.PHPDebugPreferencesBlock.initializeValues(PHPDebugPreferencesBlock.java:104)
	at org.eclipse.php.internal.debug.ui.preferences.PHPDebugPropertyPreferencePage.createCommonContents(PHPDebugPropertyPreferencePage.java:89)
	at org.eclipse.php.internal.debug.ui.preferences.PHPDebugPropertyPreferencePage.createProjectContents(PHPDebugPropertyPreferencePage.java:125)
	at org.eclipse.php.internal.ui.preferences.AbstractPHPPropertyPreferencePage.createContents(AbstractPHPPropertyPreferencePage.java:172)
	at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:244)
	at org.eclipse.php.internal.ui.preferences.AbstractPHPPropertyPreferencePage.createControl(AbstractPHPPropertyPreferencePage.java:206)
	at org.eclipse.jface.preference.PreferenceDialog.createPageControl(PreferenceDialog.java:1434)
	at org.eclipse.jface.preference.PreferenceDialog$8.run(PreferenceDialog.java:1197)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174)
	at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1189)
	at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:630)
	at org.eclipse.jface.preference.PreferenceDialog$5.lambda$0(PreferenceDialog.java:661)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
	at org.eclipse.jface.preference.PreferenceDialog$5.selectionChanged(PreferenceDialog.java:658)
	at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:821)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174)
	at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:818)
	at org.eclipse.jface.viewers.ColumnViewer.firePostSelectionChanged(ColumnViewer.java:1070)
	at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1670)
	at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:1106)
	at org.eclipse.jface.viewers.Viewer.setSelection(Viewer.java:376)
	at org.eclipse.oomph.setup.ui.recorder.PreferenceInitializationDialog$Initializer$2$2.run(PreferenceInitializationDialog.java:427)
	at org.eclipse.oomph.ui.UIUtil$7.run(UIUtil.java:662)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4046)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3662)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.block(ModalContext.java:166)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:368)
	at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:470)
	at org.eclipse.oomph.setup.ui.recorder.PreferenceInitializationDialog$Initializer.run(PreferenceInitializationDialog.java:383)
	at org.eclipse.oomph.ui.UIUtil$5.run(UIUtil.java:571)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4046)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3662)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:823)
	at org.eclipse.jface.window.Window.open(Window.java:799)
	at org.eclipse.oomph.setup.ui.recorder.PreferenceInitializationDialog$Initializer$2$1$2.run(PreferenceInitializationDialog.java:530)
	at org.eclipse.oomph.ui.UIUtil$5.run(UIUtil.java:571)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4046)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3662)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:645)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:552)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1459)

Describe the eclipse environment

EPP PHP 2023-12 RC1

Describe your system

Windows 10

To Reproduce
Visit that preference page.

Expected behavior
No NPE.