Errors in server log when importing sample projects

08:06:39,531 ERROR [org.drools.core.xml.ExtensibleXmlParser] (EJB default - 8) Node Info: id: name: 
Parser message: (null: 6, 48): src-import.3.1: The namespace attribute, 'http://www.omg.org/spec/DD/20100524/DC', of an <import> element information item must be identical to the targetNamespace attribute, 'http://www.omg.org/spec/CMMN/20151109/DC', of the imported document.
08:06:39,534 ERROR [org.drools.core.xml.ExtensibleXmlParser] (EJB default - 8) Node Info: id: name: 
Parser message: (null: 7, 48): src-import.3.1: The namespace attribute, 'http://www.omg.org/spec/DD/20100524/DI', of an <import> element information item must be identical to the targetNamespace attribute, 'http://www.omg.org/spec/CMMN/20151109/DI', of the imported document.
08:06:39,542 ERROR [org.drools.core.xml.ExtensibleXmlParser] (EJB default - 8) Node Info: id: name: 
Parser message: (null: 16, 37): src-resolve: Cannot resolve the name 'di:Diagram' to a(n) 'type definition' component.

08:06:25,145 ERROR [org.drools.core.xml.ExtensibleXmlParser] (Thread-221) Node Info: id: name: 
Parser message: (null: 6, 48): src-import.3.1: The namespace attribute, 'http://www.omg.org/spec/DD/20100524/DC', of an <import> element information item must be identical to the targetNamespace attribute, 'http://www.omg.org/spec/CMMN/20151109/DC', of the imported document.

08:06:15,513 ERROR [org.uberfire.ext.metadata.io.IndexerDispatcher] (Thread-207) Indexing error for indexer [id=org.uberfire.ext.metadata.io.CoreIndexer]: org.uberfire.java.nio.file.NoSuchFileException
	at org.uberfire.java.nio.fs.jgit.JGitFileSystemProvider.getFileAttributeView(JGitFileSystemProvider.java:1953)
	at org.uberfire.java.nio.file.Files.getFileAttributeView(Files.java:617)
	at org.uberfire.io.impl.IOServiceDotFileImpl.getFileAttributeView(IOServiceDotFileImpl.java:209)
	at org.uberfire.ext.metadata.io.CoreIndexer.toKObject(CoreIndexer.java:46)
	at org.uberfire.ext.metadata.io.IndexerDispatcher$IndexerJob.processNew(IndexerDispatcher.java:255)
	at org.uberfire.ext.metadata.io.IndexableIOEvent$NewFileEvent.apply(IndexableIOEvent.java:62)
	at org.uberfire.ext.metadata.io.IndexerDispatcher$IndexerJob.processEvent(IndexerDispatcher.java:235)
	at org.uberfire.ext.metadata.io.IndexerDispatcher$IndexerJob.processEvents(IndexerDispatcher.java:211)
	at org.uberfire.ext.metadata.io.IndexerDispatcher$IndexerJob.get(IndexerDispatcher.java:188)
	at org.uberfire.ext.metadata.io.IndexerDispatcher$IndexerJob.get(IndexerDispatcher.java:159)
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)