title: Graal-js is throwing File system provider error
body: <p>I am trying to run simple code -
  Added all the dependencies as mentioned in this document :<a href="https://github.com/graalvm/graal-js-jdk11-maven-demo/blob/master/pom.xml" rel="nofollow noreferrer">https://github.com/graalvm/graal-js-jdk11-maven-demo/blob/master/pom.xml</a></p>
  <pre><code>    ScriptEngine graaljsEngine = new ScriptEngineManager().getEngineByName(&quot;graal.js&quot;);
      try {
          graaljsEngine.eval(SOURCE);
      } catch (ScriptException e) {
          e.printStackTrace();
      }
  </code></pre>
  <p>Still i see below error:</p>
  <pre><code>  org.graalvm.polyglot.PolyglotException: java.util.ServiceConfigurationError: 
     java.nio.file.spi.**FileSystemProvider**: Provider 
     org.apache.sshd.client.subsystem.sftp.SftpFileSystemProvider could not be instantiated
  
  at java.base/java.util.ServiceLoader.fail(ServiceLoader.java:581)
  at java.base/java.util.ServiceLoader$ProviderImpl.newInstance(ServiceLoader.java:803)
  at java.base/java.util.ServiceLoader$ProviderImpl.get(ServiceLoader.java:721)
  at java.base/java.util.ServiceLoader$3.next(ServiceLoader.java:1394)
  at java.base/java.nio.file.spi.FileSystemProvider.loadInstalledProviders(FileSystemProvider.java:155)
  at java.base/java.nio.file.spi.FileSystemProvider$1.run(FileSystemProvider.java:205)
  at java.base/java.nio.file.spi.FileSystemProvider$1.run(FileSystemProvider.java:202)
  at java.base/java.security.AccessController.doPrivileged(Native Method)
  at java.base/java.nio.file.spi.FileSystemProvider.installedProviders(FileSystemProvider.java:202)
  at com.oracle.truffle.polyglot.FileSystems.findDefaultFileSystemProvider(FileSystems.java:205)
  at com.oracle.truffle.polyglot.FileSystems.newDefaultFileSystem(FileSystems.java:100)
  at com.oracle.truffle.polyglot.FileSystems$LanguageHomeFileSystem.&lt;init&gt;(FileSystems.java:1057)
  at com.oracle.truffle.polyglot.FileSystems.newLanguageHomeFileSystem(FileSystems.java:112)
  at com.oracle.truffle.polyglot.PolyglotEngineImpl.createContext(PolyglotEngineImpl.java:1584)
  at org.graalvm.polyglot.Context$Builder.build(Context.java:1627)
  at com.oracle.truffle.js.scriptengine.GraalJSScriptEngine.createDefaultContext(GraalJSScriptEngine.java:304)
  at com.oracle.truffle.js.scriptengine.GraalJSBindings.initContext(GraalJSBindings.java:89)
  at com.oracle.truffle.js.scriptengine.GraalJSBindings.requireContext(GraalJSBindings.java:84)
  at com.oracle.truffle.js.scriptengine.GraalJSBindings.entrySet(GraalJSBindings.java:170)
  at java.base/java.util.AbstractMap.containsKey(AbstractMap.java:144)
  at javax.script.SimpleScriptContext.getAttribute(SimpleScriptContext.java:158)
  at com.oracle.truffle.js.scriptengine.GraalJSScriptEngine.createSource(GraalJSScriptEngine.java:401)
  at com.oracle.truffle.js.scriptengine.GraalJSScriptEngine.eval(GraalJSScriptEngine.java:397)
  at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:264)
  </code></pre>