saros ClassNotFoundException while loading Saros/I in Jetbrains CLion IDE v2021.2

Describe the bug While loading the Saros Plugin in Jetbrains CLion IDE, the startup of the IDE aborts with an ClassNotFoundException and the plugin is disabled for the next start of the IDE

To Reproduce Steps to reproduce the behavior:

Install Saros Dev-Build (saros-intellij-dev-a969bb9cd4) in the Jetbrains CLion IDE v2021.2 (Release Candidate build 212.4746.61)
Restart the IDE, after activating the plugin
On startup, an ClassNotFoundException is thrown, while loading saros (see the following log)

Expected behavior Saros can succesfully loaded/initialized in Jetbrains CLion IDE v2021.2 (Release Candidate build 212.4746.61)

Log files

INFO - llij.ide.plugins.PluginManager - Loaded custom plugins: Toml (0.2.151.3997-212), Saros (0.3.0.DEV-a969bb9cd4), Rust (0.4.151.3997-212) INFO - #com.intellij.idea.Main - WM detected: KWin ERROR - llij.ide.plugins.PluginManager - com.intellij.diagnostic.PluginException: Fatal error initializing ' saros.intellij.SarosComponent ' [Plugin: saros] java.util.concurrent.CompletionException: com.intellij.diagnostic.PluginException: Fatal error initializing ' saros.intellij.SarosComponent ' [Plugin: saros] at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314) at java.base/java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:757) at java.base/java.util.concurrent.CompletableFuture.uniAcceptStage(CompletableFuture.java:731) at java.base/java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:2108) at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt:75) at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt) at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072) at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:479) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183) Caused by: com.intellij.diagnostic.PluginException: Fatal error initializing ' saros.intellij.SarosComponent ' [Plugin: saros] at com.intellij.serviceContainer.ComponentManagerImpl.handleInitComponentError$intellij_platform_serviceContainer(ComponentManagerImpl.kt:515) at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:387) at com.intellij.serviceContainer.ComponentManagerImpl.access$registerComponents(ComponentManagerImpl.kt:58) at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:255) at com.intellij.openapi.client.ClientAwareComponentManager.registerComponents(ClientAwareComponentManager.kt:63) at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt:77) at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt) at java.base/java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:753) ... 11 more Caused by: java.lang.ClassNotFoundException: saros.intellij.SarosComponent PluginClassLoader(plugin=PluginDescriptor(name=Saros, id=saros, descriptorPath=plugin.xml, path=~/.local/share/JetBrains/Toolbox/apps/CLion/ch-1/212.4746.61.plugins/saros-intellij, version=0.3.0.DEV-a969bb9cd4, package=null), packagePrefix=null, instanceId=59, state=active) at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:254) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) at com.intellij.serviceContainer.ComponentManagerImpl.registerComponent(ComponentManagerImpl.kt:441) at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:380) ... 17 more

ERROR - llij.ide.plugins.PluginManager - CLion 2021.2 Build #CL-212.4746.61 ERROR - llij.ide.plugins.PluginManager - JDK: 11.0.11; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o. ERROR - llij.ide.plugins.PluginManager - OS: Linux ERROR - llij.ide.plugins.PluginManager - Plugin to blame: Saros version: 0.3.0.DEV-a969bb9cd4 INFO - e.plugins.DisabledPluginsState - Plugins to disable: [saros] INFO -
INFO - Plugin Error INFO - Plugin 'saros' failed to initialize and will be disabled. Please restart CLion. INFO -
INFO - java.lang.ClassNotFoundException:
saros.intellij.SarosComponent PluginClassLoader(plugin=PluginDescriptor(name=Saros, id=saros, descriptorPath=plugin.xml, path=~/.local/share/JetBrains/Toolbox/apps/CLion/ch-1/212.4746.61.plugins/saros-intellij, version=0.3.0.DEV-a969bb9cd4, package=null), packagePrefix=null, instanceId=59, state=active) at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:254) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) at com.intellij.serviceContainer.ComponentManagerImpl.registerComponent(ComponentManagerImpl.kt:441) at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:380) at com.intellij.serviceContainer.ComponentManagerImpl.access$registerComponents(ComponentManagerImpl.kt:58) at com.intellij.serviceContainer.ComponentManagerImpl.registerComponents(ComponentManagerImpl.kt:255) at com.intellij.openapi.client.ClientAwareComponentManager.registerComponents(ClientAwareComponentManager.kt:63) at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt:77) at com.intellij.idea.ApplicationLoader$initApplication$2$1.accept(ApplicationLoader.kt) at java.base/java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:753) at java.base/java.util.concurrent.CompletableFuture.uniAcceptStage(CompletableFuture.java:731) at java.base/java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:2108) at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt:75) at com.intellij.idea.ApplicationLoader$initApplication$2.apply(ApplicationLoader.kt) at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072) at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:479) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)

Environment (please complete the following information):

OS: Ubuntu 20.04.2 LTS (JDK: 11.0.11; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o.)
IDE: Jetbrains CLion IDE v2021.2 (Release Candidate build 212.4746.61) but also reproducible with the latest EAP build (no subscription or triale period required): 2021.2 Beta build 212.4746.15 (to download the EAP build, scroll to the version 2021.2 Beta build 212.4746.15 on the CLion EAP Page)
Saros Version: saros-intellij-dev-a969bb9cd4 (Dev/Master-Build, suggested by https://github.com/saros-project/saros/issues/1143#issuecomment-850431153 for the 2021 JetBrains platform)