title: ESB Mule 3.8.1 CE HTTP request thrown doSelect Error
body: <p>I have Anypoint 6.2.5<br>
  Mule 3.8.1 CE<br>
  When I am trying to send json to Magento2 Api.<br>
  Im using http request like that:  </p>
  
  <pre><code>&lt;http:request config-ref="HTTP_Request_Configuration" path="/products/attributes" method="POST" doc:name="HTTP"&gt;
  &lt;http:request-builder&gt;
  &lt;http:header headerName="Authorization" value="Bearer xxxx"/&gt;
  &lt;http:header headerName="Content-Type" value="application/json"/&gt;
  &lt;/http:request-builder&gt;
  &lt;/http:request&gt;
  </code></pre>
  
  <p>Response Timeout is set to 10s<br>
  I got an error :  </p>
  
  <pre><code>cze 28, 2017 8:48:03 AM org.glassfish.grizzly.nio.SelectorRunner doSelect
  SEVERE: doSelect exception
  java.lang.IllegalAccessError: tried to access method com.ning.http.client.providers.grizzly.HttpTransactionContext.getAsyncHandler()Lcom/ning/http/client/AsyncHandler; from class org.mule.module.http.internal.request.grizzly.FlowWorkManagerIOStrategy
  at org.mule.module.http.internal.request.grizzly.FlowWorkManagerIOStrategy.getWorkManager(FlowWorkManagerIOStrategy.java:119)
  at org.mule.module.http.internal.request.grizzly.FlowWorkManagerIOStrategy.getThreadPoolFor(FlowWorkManagerIOStrategy.java:90)
  at org.mule.module.http.internal.request.grizzly.FlowWorkManagerIOStrategy.executeIoEvent(FlowWorkManagerIOStrategy.java:69)
  at org.glassfish.grizzly.strategies.AbstractIOStrategy.executeIoEvent(AbstractIOStrategy.java:89)
  at org.glassfish.grizzly.nio.SelectorRunner.iterateKeyEvents(SelectorRunner.java:415)
  at org.glassfish.grizzly.nio.SelectorRunner.iterateKeys(SelectorRunner.java:384)
  at org.glassfish.grizzly.nio.SelectorRunner.doSelect(SelectorRunner.java:348)
  at org.glassfish.grizzly.nio.SelectorRunner.run(SelectorRunner.java:279)
  at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
  at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
  at java.lang.Thread.run(Thread.java:748)
  
  ERROR 2017-06-28 08:48:10,554 [[magento].readAttributeMessagesFromQueueFlow.stage1.01] org.mule.exception.DefaultMessagingExceptionStrategy: 
  ********************************************************************************
  Message               : Error sending HTTP request.
  Payload               : {"attribute":{"is_visible":true,"attribute_code":"ts_size","frontend_input":"select","default_frontend_label":"ts_size","options":[{"label":"36","value":"36","sort_order":0,"is_default":true,"store_labels":[{"label":"36","store_id":0}]},{"label":"S","value":"S","sort_order":0,"is_default":true,"store_labels":[{"label":"S","store_id":0}]},{"label":"XS","value":"XS","sort_order":0,"is_default":true,"store_labels":[{"label":"XS","store_id":0}]},{"label":"XL","value":"XL","sort_order":0,"is_default":true,"store_labels":[{"label":"XL","store_id":0}]},{"label":"L","value":"L","sort_order":0,"is_default":true,"store_labels":[{"label":"L","store_id":0}]},{"label":"M","value":"M","sort_order":0,"is_default":true,"store_labels":[{"label":"M","store_id":0}]},{"label":"ONE SIZE","value":"ONE SIZE","sort_order":0,"is_default":true,"store_labels":[{"label":"ONE SIZE","store_id":0}]},{"label":"34","value":"34","sort_order":0,"is_default":true,"store_labels":[{"label":"34","store_id":0}]},{"label":"40","value":"40","sort_order":0,"is_default":true,"store_labels":[{"label":"40","store_id":0}]},{"label":"42","value":"42","sort_order":0,"is_default":true,"store_labels":[{"label":"42","store_id":0}]},{"label":"38","value":"38","sort_order":0,"is_default":true,"store_labels":[{"label":"38","store_id":0}]}],"frontend_labels":[{"label":"ts_size","store_id":0}]}}
  Payload Type          : [B
  Element               : /readAttributeMessagesFromQueueFlow/processors/2 @ magento:Attributes.xml:24 (HTTP)
  Element XML           : &lt;http:request config-ref="HTTP_Request_Configuration" path="/products/attributes" method="POST" doc:name="HTTP"&gt;
                          &lt;http:request-builder&gt;
                          &lt;http:header headerName="Authorization" value="Bearer 3vh5yv803usi8ik2ix695ukweu2j8nnq"&gt;&lt;/http:header&gt;
                          &lt;http:header headerName="Content-Type" value="application/json"&gt;&lt;/http:header&gt;
                          &lt;/http:request-builder&gt;
                          &lt;/http:request&gt;
  --------------------------------------------------------------------------------
  Root Exception stack trace:
  java.util.concurrent.TimeoutException: Timeout exceeded
      at com.ning.http.client.providers.grizzly.GrizzlyAsyncHttpProvider.timeout(GrizzlyAsyncHttpProvider.java:433)
      at com.ning.http.client.providers.grizzly.GrizzlyAsyncHttpProvider$3.onTimeout(GrizzlyAsyncHttpProvider.java:281)
      at org.glassfish.grizzly.utils.IdleTimeoutFilter$DefaultWorker.doWork(IdleTimeoutFilter.java:401)
      at org.glassfish.grizzly.utils.IdleTimeoutFilter$DefaultWorker.doWork(IdleTimeoutFilter.java:380)
      at org.glassfish.grizzly.utils.DelayedExecutor$DelayedRunnable.run(DelayedExecutor.java:158)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at java.lang.Thread.run(Thread.java:748)
  </code></pre>
  
  <p>I dont really know how can I fix it.<br>
  I am sure that sending request works - new attribute in Magento was created correctly but error shown up and flow is stopped.<br>
  Some more details:  </p>
  
  <pre><code>eclipse.buildId=unknown  
  java.version=1.8.0_131  
  java.vendor=Oracle Corporation  
  BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=pl_PL  
  Command-line arguments:  -os linux -ws gtk -arch x86_64
  </code></pre>
  
  <p>It works without problems and without errors on my friends Pc. Am I missing some packages on my system?   </p>