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java.lang.NullPointerException: null at com.codenvy.auth.sso.client.MachineSessionInvalidator.onEvent(MachineSessionInvalidator.java:56)[codenvy-hosted-sso-client-5.0.0-M4.jar:5.0.0-M4] at com.codenvy.auth.sso.client.MachineSessionInvalidator.onEvent(MachineSessionInvalidator.java:35)[codenvy-hosted-sso-client-5.0.0-M4.jar:5.0.0-M4] at org.eclipse.che.api.core.notification.EventService.publish(EventService.java:105)[che-core-api-core-5.0.0-M4.jar:5.0.0-M4] at org.eclipse.che.api.workspace.server.WorkspaceRuntimes.publishWorkspaceEvent(WorkspaceRuntimes.java:583)[che-core-api-workspace-5.0.0-M4.jar:5.0.0-M4] at org.eclipse.che.api.workspace.server.WorkspaceRuntimes.stop(WorkspaceRuntimes.java:345)[che-core-api-workspace-5.0.0-M4.jar:5.0.0-M4] at org.eclipse.che.api.workspace.server.WorkspaceManager.lambda$performAsyncStop$2(WorkspaceManager.java:663)[che-core-api-workspace-5.0.0-M4.jar:5.0.0-M4]