Reversing LZMA on C:\Users\Gabriel\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\Users\Gabriel\AppData\Roaming\.minecraft\launcher.pack
Unpacking C:\Users\Gabriel\AppData\Roaming\.minecraft\launcher.pack to C:\Users\Gabriel\AppData\Roaming\.minecraft\launcher.jar
Cleaning up C:\Users\Gabriel\AppData\Roaming\.minecraft\launcher.pack
Starting launcher.
FATAL ERROR: java.lang.LinkageError: Illegal class file encountered. Try running with -Xverify:all in method <clinit>
	at com.sun.org.apache.xerces.internal.parsers.AbstractDOMParser.startDocument(Unknown Source)
	at com.sun.org.apache.xerces.internal.xinclude.XIncludeHandler.startDocument(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startDocument(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.startEntity(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.startDocumentParsing(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
	at org.apache.logging.log4j.core.config.XMLConfiguration.<init>(XMLConfiguration.java:146)
	at org.apache.logging.log4j.core.config.XMLConfigurationFactory.getConfiguration(XMLConfigurationFactory.java:40)
	at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:446)
	at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:420)
	at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:377)
	at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:149)
	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:85)
	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:34)
	at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:387)
	at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:322)
	at net.minecraft.launcher.Launcher.<clinit>(Launcher.java:58)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at net.minecraft.bootstrap.Bootstrap.startLauncher(Bootstrap.java:240)
	at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:124)
	at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:381)


Please fix the error and restart.