java.lang.Throwable: The method designed for fully qualified names only. Got "null|string".

[quterorta]

Describe the bug (*)

A clear and concise description of what the bug is.

java.lang.Throwable: The method designed for fully qualified names only. Got "null|string".
	at com.intellij.openapi.diagnostic.Logger.error(Logger.java:202)
	at com.jetbrains.php.util.PhpContractUtil.assertFqn(PhpContractUtil.java:19)
	at com.jetbrains.php.codeInsight.PhpCodeInsightUtil.isSameNamespace(PhpCodeInsightUtil.java:1587)
	at com.magento.idea.magento2plugin.actions.generation.references.PhpClassReferenceResolver.alreadyImported(PhpClassReferenceResolver.java:98)
	at com.magento.idea.magento2plugin.actions.generation.references.PhpClassReferenceResolver.importWithConflictResolve(PhpClassReferenceResolver.java:135)
	at com.magento.idea.magento2plugin.actions.generation.references.PhpClassReferenceResolver.importReferences(PhpClassReferenceResolver.java:68)
	at com.magento.idea.magento2plugin.actions.generation.generator.PluginClassGenerator.lambda$generate$2(PluginClassGenerator.java:198)
	at com.intellij.openapi.command.WriteCommandAction.lambda$runWriteCommandAction$4(WriteCommandAction.java:360)
	at com.intellij.openapi.command.WriteCommandAction$BuilderImpl.lambda$doRunWriteCommandAction$1(WriteCommandAction.java:149)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:958)
	at com.intellij.openapi.command.WriteCommandAction$BuilderImpl.lambda$doRunWriteCommandAction$2(WriteCommandAction.java:147)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:219)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:184)
	at com.intellij.openapi.command.WriteCommandAction$BuilderImpl.doRunWriteCommandAction(WriteCommandAction.java:156)
	at com.intellij.openapi.command.WriteCommandAction$BuilderImpl.run(WriteCommandAction.java:123)
	at com.intellij.openapi.command.WriteCommandAction.runWriteCommandAction(WriteCommandAction.java:360)
	at com.intellij.openapi.command.WriteCommandAction.runWriteCommandAction(WriteCommandAction.java:348)
	at com.magento.idea.magento2plugin.actions.generation.generator.PluginClassGenerator.generate(PluginClassGenerator.java:96)
	at com.magento.idea.magento2plugin.actions.generation.generator.FileGenerator.generate(FileGenerator.java:41)
	at com.magento.idea.magento2plugin.actions.generation.dialog.CreateAPluginDialog.onOK(CreateAPluginDialog.java:187)
	at com.magento.idea.magento2plugin.actions.generation.dialog.CreateAPluginDialog.lambda$new$0(CreateAPluginDialog.java:141)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2313)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
	at java.desktop/javax.swing.AbstractButton.doClick(AbstractButton.java:374)
	at java.desktop/javax.swing.plaf.basic.BasicRootPaneUI$Actions.actionPerformed(BasicRootPaneUI.java:259)
	at java.desktop/javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1810)
	at java.desktop/javax.swing.JComponent.processKeyBinding(JComponent.java:2943)
	at java.desktop/javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:311)
	at java.desktop/javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:253)
	at java.desktop/javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:3036)
	at java.desktop/javax.swing.JComponent.processKeyBindings(JComponent.java:3028)
	at java.desktop/javax.swing.JComponent.processKeyEvent(JComponent.java:2905)
	at java.desktop/java.awt.Component.processEvent(Component.java:6433)
	at java.desktop/java.awt.Container.processEvent(Container.java:2266)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5026)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4854)
	at java.desktop/java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1953)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:886)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1166)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:1023)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:849)
	at com.intellij.ide.IdeKeyboardFocusManager.access$dispatchEvent$s1569605750(IdeKeyboardFocusManager.kt:18)
	at com.intellij.ide.IdeKeyboardFocusManager$dispatchEvent$1.invoke(IdeKeyboardFocusManager.kt:25)
	at com.intellij.ide.IdeKeyboardFocusManager$dispatchEvent$1.invoke(IdeKeyboardFocusManager.kt:25)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$1(IdeEventQueue.kt:994)
	at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:105)
	at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:994)
	at com.intellij.ide.IdeKeyboardFocusManager.dispatchEvent(IdeKeyboardFocusManager.kt:25)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4903)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2804)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4854)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:790)
	at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:739)
	at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:731)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:763)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:761)
	at java.base/java.security.AccessCont

To Reproduce (*)

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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior (*)

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Screenshots

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Please complete the following information: (*)

• OS: Windows 11.0
• PhpStorm/Intellij version: 2023.1.1
• Plugin Version: 5.1.1

Additional context

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