com.intellij.diagnostic.PluginException: Short name 'InvisibleCharacter' is not unique

[thereIsMostDefinitelyNothinToSeeHere]

com.intellij.diagnostic.PluginException: Short name 'InvisibleCharacter' is not unique
class 'com.ultrahob.zerolength.InvisibleCharacterInspection' in PluginDescriptor(name=Zero Width Characters locator, id=com.ultrahob.zerolength.plugin, descriptorPath=plugin.xml, path=~/.local/share/JetBrains/Toolbox/apps/PhpStorm/ch-0/212.5457.49.plugins/ZeroLengthRadar, version=0.95, package=null)
and class 'com.ultrahob.zerolength.InvisibleCharacterInspection' in PluginDescriptor(name=Zero Width Characters locator, id=com.ultrahob.zerolength.plugin, descriptorPath=plugin.xml, path=~/.local/share/JetBrains/Toolbox/apps/PhpStorm/ch-0/212.5457.49.plugins/ZeroLengthRadar.jar, version=0.93, package=null)
conflict
	at com.intellij.codeInspection.ex.InspectionToolRegistrarKt.checkForDuplicateShortName(InspectionToolRegistrar.kt:176)
	at com.intellij.codeInspection.ex.InspectionToolRegistrarKt.registerInspection(InspectionToolRegistrar.kt:135)
	at com.intellij.codeInspection.ex.InspectionToolRegistrarKt.access$registerInspection(InspectionToolRegistrar.kt:1)
	at com.intellij.codeInspection.ex.InspectionToolRegistrar$registerInspections$1.extensionAdded(InspectionToolRegistrar.kt:72)
	at com.intellij.codeInspection.ex.InspectionToolRegistrar$registerInspections$1.extensionAdded(InspectionToolRegistrar.kt:70)
	at com.intellij.openapi.extensions.impl.ExtensionPointImpl.notifyListeners(ExtensionPointImpl.java:785)
	at com.intellij.openapi.extensions.impl.ExtensionPointImpl.lambda$registerExtensions$17(ExtensionPointImpl.java:985)
	at com.intellij.ide.plugins.DynamicPlugins$loadPlugin$1.run(DynamicPlugins.kt:820)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:936)
	at com.intellij.ide.plugins.DynamicPlugins.loadPlugin(DynamicPlugins.kt:808)
	at com.intellij.ide.plugins.DynamicPlugins.loadPlugin(DynamicPlugins.kt:790)
	at com.intellij.ide.plugins.PluginInstaller.installAndLoadDynamicPlugin(PluginInstaller.java:392)
	at com.intellij.openapi.updateSettings.impl.PluginDownloader.tryInstallWithoutRestart(PluginDownloader.java:351)
	at com.intellij.openapi.updateSettings.impl.PluginUpdateDialog$4.lambda$run$0(PluginUpdateDialog.java:198)
	at com.intellij.openapi.updateSettings.impl.UpdateInstaller.installDownloadedPluginUpdates(UpdateInstaller.kt:113)
	at com.intellij.openapi.updateSettings.impl.PluginUpdateDialog$4.lambda$run$1(PluginUpdateDialog.java:197)
	at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:214)
	at com.intellij.openapi.application.TransactionGuardImpl.access$200(TransactionGuardImpl.java:21)
	at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:196)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:794)
	at com.intellij.openapi.application.impl.ApplicationImpl.lambda$invokeLater$4(ApplicationImpl.java:350)
	at com.intellij.openapi.application.impl.FlushQueue.doRun(FlushQueue.java:84)
	at com.intellij.openapi.application.impl.FlushQueue.runNextEvent(FlushQueue.java:133)
	at com.intellij.openapi.application.impl.FlushQueue.flushNow(FlushQueue.java:46)
	at com.intellij.openapi.application.impl.FlushQueue$FlushNow.run(FlushQueue.java:189)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:776)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:746)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:885)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:754)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:441)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:825)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:440)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:794)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:486)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

PhpStorm 2021.2.3
Build #PS-212.5457.49, built on October 13, 2021

Runtime version: 11.0.12+7-b1504.40 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Linux 5.4.0-88-generic
GC: G1 Young Generation, G1 Old Generation
Memory: 4096M
Cores: 8
Registry: debugger.watches.in.variables=false, run.processes.with.pty=TRUE
Non-Bundled Plugins: com.intellij.ideolog (203.0.27.0), com.ultrahob.zerolength.plugin (0.95), org.sonarlint.idea (6.0.0.37696), com.intellij.properties (212.4746.57), com.alayouni.ansiHighlight (1.2.4), Jetbrains TeamCity Plugin (2021.1.92869), io.pivotal.jasmine (1.5), Karma (212.4746.57), NEON support (0.5.1), com.kalessil.phpStorm.phpInspectionsEA (4.0.6.4), de.espend.idea.php.annotation (8.0.0)
Current Desktop: MATE

[aand18]

That's because you also have installed the forked plug-in with this fix:

bluelovers@c8a718a

You should uninstall one of the two plug-ins.