A terminally deprecated method in sun.misc.Unsafe has been called

[adria-boada]

I've found a warning that stalls vim-LanguageTool. I think it is related to an update of java. Does anyone have any insight on how to temporarily or permanently fix it? It appears to arise from "libs/guava.jar"?

I've found issues on other repositories with resembling warnings: jruby/jruby#8696

WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
WARNING: sun.misc.Unsafe::objectFieldOffset has been called by com.google.common.util.concurrent.AbstractFuture$UnsafeAtomicHelper (file:/home/adria/.local/share/LanguageTool-5.9/libs/guava.jar)
WARNING: Please consider reporting this to the maintainers of class com.google.common.util.concurrent.AbstractFuture$UnsafeAtomicHelper
WARNING: sun.misc.Unsafe::objectFieldOffset will be removed in a future release
Exception in thread "main" java.lang.RuntimeException: Could not activate rules
	at org.languagetool.JLanguageTool.<init>(JLanguageTool.java:340)
	at org.languagetool.JLanguageTool.<init>(JLanguageTool.java:299)
	at org.languagetool.MultiThreadedJLanguageTool.<init>(MultiThreadedJLanguageTool.java:94)
	at org.languagetool.MultiThreadedJLanguageTool.<init>(MultiThreadedJLanguageTool.java:84)
	at org.languagetool.MultiThreadedJLanguageTool.<init>(MultiThreadedJLanguageTool.java:67)
	at org.languagetool.commandline.Main.<init>(Main.java:69)
	at org.languagetool.commandline.Main.main(Main.java:423)
Caused by: java.io.IOException: Cannot load or parse input stream of '/org/languagetool/rules/ca/grammar.xml'
	at org.languagetool.rules.patterns.PatternRuleLoader.getRules(PatternRuleLoader.java:78)
	at org.languagetool.Language.getPatternRules(Language.java:663)
	at org.languagetool.JLanguageTool.activateDefaultPatternRules(JLanguageTool.java:668)
	at org.languagetool.JLanguageTool.<init>(JLanguageTool.java:333)
	... 6 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 65; JAXP00010004: The accumulated size of entities is "100.060" that exceeded the "100.000" limit set by "jdk.xml.totalEntitySizeLimit".
	at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.checkLimit(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.checkEntityLimit(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.scanContent(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
	at java.xml/javax.xml.parsers.SAXParser.parse(Unknown Source)
	at org.languagetool.rules.patterns.PatternRuleLoader.getRules(PatternRuleLoader.java:75)
	... 9 more