Full stack trace

[ERROR] Failed to execute goal org.jboss.maven.plugins:maven-jdocbook-plugin:2.3.5:generate (default-generate) on project hibernate-search-documentation: XSLT problem: error performing translation [null] : org.xml.sax.SAXParseException; systemId: file:/Users/manu/projects/notbackedup/git/search/hibernate-search-documentation/src/main/docbook/en-US/master.xml; lineNumber: 27; columnNumber: 19; Invalid byte 1 of 1-byte UTF-8 sequence. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.jboss.maven.plugins:maven-jdocbook-plugin:2.3.5:generate (default-generate) on project hibernate-search-documentation: XSLT problem
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: XSLT problem
	at org.jboss.maven.plugins.jdocbook.AbstractDocBookMojo.execute(AbstractDocBookMojo.java:231)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
	... 19 more
Caused by: org.jboss.jdocbook.xslt.XSLTException: error performing translation [null] : org.xml.sax.SAXParseException; systemId: file:/Users/manu/projects/notbackedup/git/search/hibernate-search-documentation/src/main/docbook/en-US/master.xml; lineNumber: 27; columnNumber: 19; Invalid byte 1 of 1-byte UTF-8 sequence.
	at org.jboss.jdocbook.profile.ProfilerImpl.profile(ProfilerImpl.java:112)
	at org.jboss.maven.plugins.jdocbook.GenerationMojo.process(GenerationMojo.java:61)
	at org.jboss.maven.plugins.jdocbook.AbstractDocBookMojo.doExecute(AbstractDocBookMojo.java:295)
	at org.jboss.maven.plugins.jdocbook.AbstractDocBookMojo.execute(AbstractDocBookMojo.java:227)
	... 21 more
Caused by: javax.xml.transform.TransformerException: org.xml.sax.SAXParseException; systemId: file:/Users/manu/projects/notbackedup/git/search/hibernate-search-documentation/src/main/docbook/en-US/master.xml; lineNumber: 27; columnNumber: 19; Invalid byte 1 of 1-byte UTF-8 sequence.
	at com.icl.saxon.om.Builder.build(Builder.java:273)
	at com.icl.saxon.Controller.transform(Controller.java:936)
	at org.jboss.jdocbook.profile.ProfilerImpl.profile(ProfilerImpl.java:109)
	... 24 more
Caused by: org.xml.sax.SAXParseException; systemId: file:/Users/manu/projects/notbackedup/git/search/hibernate-search-documentation/src/main/docbook/en-US/master.xml; lineNumber: 27; columnNumber: 19; Invalid byte 1 of 1-byte UTF-8 sequence.
	at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
	at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at com.icl.saxon.om.Builder.build(Builder.java:265)
	... 26 more
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