Import sample project at the same time causes error [CAT3]

{"ToSubject":"org.uberfire.preferences.shared.bean.PreferenceBeanServerStore:RPC.load:org.uberfire.preferences.shared.bean.BasePreferencePortable::624:RespondTo:RPC"} | Uncaught exception: Client-side exception occurred although RPC call succeeded. Caused by: CDI Event exception: CommandType=CDIEvent, BeanType=org.guvnor.common.services.project.context.WorkspaceProjectContextChangeEvent, BeanReference=WorkspaceProjectContextChangeEvent [ou=OrganizationalUnitImpl [name=ccc, repositories=[GitRepository [alias=example-Employee_Rostering, environment={security:groups=[], scheme=git, contributors=[org.guvnor.structure.contributors.Contributor@bd22319b], space=ccc}, groups=[], publicURI=[DefaultPublicURI{protocol='http', uri='http://myapp-rhpamcentr-kill-bill-volume-two.project.openshiftdomain:80/git/ccc/example-Employee_Rostering'}], branches={master=org.guvnor.structure.repositories.Branch@494cfdd3}]], groups=[], contributors=[org.guvnor.structure.contributors.Contributor@bd22319b], defaultGroupId=com.ccc, deleted=false], workspaceProject=org.guvnor.common.services.project.model.WorkspaceProject@19a7bd57, module=undefined, pkg=null], FromClient=1 sent to [unavailable] Caused by: (TypeError) : Cannot read property 'n' of undefined


{"ToSubject":"org.kie.workbench.common.screens.examples.service.ExamplesService:RPC.setupExamples:org.kie.workbench.common.screens.examples.model.ExampleOrganizationalUnit:java.util.List::68:RespondTo:RPC"} | Uncaught exception: Client-side exception occurred although RPC call succeeded. Caused by: CDI Event exception: CommandType=CDIEvent, BeanType=org.guvnor.common.services.project.context.WorkspaceProjectContextChangeEvent, BeanReference=WorkspaceProjectContextChangeEvent [ou=OrganizationalUnitImpl [name=branchesspace, repositories=[GitRepository [alias=branchesproject, environment={security:groups=[], scheme=git, contributors=[org.guvnor.structure.contributors.Contributor@bd22319a], space=branchesspace}, groups=[], publicURI=[DefaultPublicURI{protocol='http', uri='http://myapp-rhpamcentr-kill-bill-volume-two.project.openshiftdomain:80/git/branchesspace/branchesproject'}], branches={aaa=org.guvnor.structure.repositories.Branch@d67674f6, master=org.guvnor.structure.repositories.Branch@a3c8a322}], GitRepository [alias=branchesproject-1, environment={security:groups=[], scheme=git, contributors=[org.guvnor.structure.contributors.Contributor@bd22319a, org.guvnor.structure.contributors.Contributor@e91d7c0a, org.guvnor.structure.contributors.Contributor@60f1b159, org.guvnor.structure.contributors.Contributor@758a3f9e, org.guvnor.structure.contributors.Contributor@a885c314], space=branchesspace}, groups=[], publicURI=[DefaultPublicURI{protocol='http', uri='http://myapp-rhpamcentr-kill-bill-volume-two.project.openshiftdomain:80/git/branchesspace/branchesproject-1'}], branches={master=org.guvnor.structure.repositories.Branch@f9ad60be}], GitRepository [alias=example-Evaluation_Process, environment={security:groups=[], scheme=git, contributors=[org.guvnor.structure.contributors.Contributor@bd22319a, org.guvnor.structure.contributors.Contributor@e91d7c0a, org.guvnor.structure.contributors.Contributor@60f1b159, org.guvnor.structure.contributors.Contributor@758a3f9e, org.guvnor.structure.contributors.Contributor@a885c315], space=branchesspace}, groups=[], publicURI=[DefaultPublicURI{protocol='http', uri='http://myapp-rhpamcentr-kill-bill-volume-two.project.openshiftdomain:80/git/branchesspace/example-Evaluation_Process'}], branches={master=org.guvnor.structure.repositories.Branch@721d3840}], GitRepository [alias=example-Course_Scheduling, environment={security:groups=[], scheme=git, contributors=[org.guvnor.structure.contributors.Contributor@bd22319a, org.guvnor.structure.contributors.Contributor@e91d7c0a, org.guvnor.structure.contributors.Contributor@60f1b159, org.guvnor.structure.contributors.Contributor@758a3f9e, org.guvnor.structure.contributors.Contributor@a885c315], space=branchesspace}, groups=[], publicURI=[DefaultPublicURI{protocol='http', uri='http://myapp-rhpamcentr-kill-bill-volume-two.project.openshiftdomain:80/git/branchesspace/example-Course_Scheduling'}], branches={master=org.guvnor.structure.repositories.Branch@f7d473d6}]], groups=[], contributors=[org.guvnor.structure.contributors.Contributor@bd22319a, org.guvnor.structure.contributors.Contributor@e91d7c0a, org.guvnor.structure.contributors.Contributor@60f1b159, org.guvnor.structure.contributors.Contributor@758a3f9e, org.guvnor.structure.contributors.Contributor@a885c315], defaultGroupId=com.branchesspace, deleted=false], workspaceProject=org.guvnor.common.services.project.model.WorkspaceProject@d9f5bc4c, module=null, pkg=null], FromClient=1 sent to [unavailable] Caused by: (TypeError) : Cannot read property 'n' of undefined