JackrabbitInitializer.error.log

[Fatal Error] :1:2: Markup im Dokument vor dem Root-Element muss ordnungsgemäß formatiert sein.
2019-02-22 14:21:53,381 ERROR agnolia.types.datasource.jcr.JackrabbitInitializer: Failed to initialize content type [happyCustomer].
java.io.IOException: Markup im Dokument vor dem Root-Element muss ordnungsgemäß formatiert sein.
	at org.apache.jackrabbit.core.util.DOMWalker.<init>(DOMWalker.java:65) ~[jackrabbit-core-2.16.1.jar:2.16.1]
	at org.apache.jackrabbit.core.nodetype.xml.NodeTypeReader.<init>(NodeTypeReader.java:108) ~[jackrabbit-core-2.16.1.jar:2.16.1]
	at info.magnolia.types.datasource.jcr.JackrabbitInitializer.registerNodeTypes(JackrabbitInitializer.java:450) ~[magnolia-content-types-1.0.1-SNAPSHOT.jar:?]
	at info.magnolia.types.datasource.jcr.JackrabbitInitializer.registerNodeTypes(JackrabbitInitializer.java:374) ~[magnolia-content-types-1.0.1-SNAPSHOT.jar:?]
	at info.magnolia.types.datasource.jcr.JackrabbitInitializer.initialize(JackrabbitInitializer.java:170) ~[magnolia-content-types-1.0.1-SNAPSHOT.jar:?]
	at info.magnolia.types.datasource.jcr.JackrabbitInitializer.contentTypeChange(JackrabbitInitializer.java:143) ~[magnolia-content-types-1.0.1-SNAPSHOT.jar:?]
	at info.magnolia.types.ContentTypeChangeEvent.dispatch(ContentTypeChangeEvent.java:75) ~[magnolia-content-types-1.0.1-SNAPSHOT.jar:?]
	at info.magnolia.types.ContentTypeChangeEvent.dispatch(ContentTypeChangeEvent.java:44) ~[magnolia-content-types-1.0.1-SNAPSHOT.jar:?]
	at info.magnolia.event.SimpleEventBus.fireEvent(SimpleEventBus.java:75) ~[magnolia-core-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.types.ContentTypeRegistry.register(ContentTypeRegistry.java:144) ~[magnolia-content-types-1.0.1-SNAPSHOT.jar:?]
	at info.magnolia.config.source.yaml.YamlConfigurationSource.loadAndRegister(YamlConfigurationSource.java:142) ~[magnolia-configuration-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.config.source.yaml.AbstractFileResourceConfigurationSource.lambda$start$2(AbstractFileResourceConfigurationSource.java:164) ~[magnolia-configuration-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.resourceloader.layered.LayeredResourceOrigin$RelayingChangeHandler.onResourceChanged(LayeredResourceOrigin.java:285) [magnolia-resource-loader-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.resourceloader.AbstractResourceOrigin.dispatchResourceChange(AbstractResourceOrigin.java:132) [magnolia-resource-loader-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.resourceloader.file.FileWatcherCallback.dispatchResourceChange(FileWatcherCallback.java:119) [magnolia-resource-loader-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.resourceloader.file.FileWatcherCallback.modified(FileWatcherCallback.java:90) [magnolia-resource-loader-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.dirwatch.DirectoryWatcher.processEvent(DirectoryWatcher.java:312) [magnolia-resource-loader-6.0.1-SNAPSHOT.jar:?]
	at info.magnolia.dirwatch.DirectoryWatcher.run(DirectoryWatcher.java:256) [magnolia-resource-loader-6.0.1-SNAPSHOT.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_181]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_181]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_181]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_181]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
Caused by: org.xml.sax.SAXParseException: Markup im Dokument vor dem Root-Element muss ordnungsgemäß formatiert sein.
	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257) ~[?:1.8.0_181]
	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339) ~[?:1.8.0_181]
	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121) ~[?:1.8.0_181]
	at org.apache.jackrabbit.core.util.DOMWalker.<init>(DOMWalker.java:60) ~[jackrabbit-core-2.16.1.jar:2.16.1]
	... 22 more