ERROR [AbstractTestRunner] Exception during Test Execution

For the moment, it's not a blocking problem.
But i need SOAPUI with java version 8 for a entreprise project.

I deleted my workspace file.
I created a new workspace then i imported my project in this new workspace but i see again the same error message.

<?xml version="1.0" encoding="UTF-8"?>
<con:soapui-workspace name="V3Workspace" soapui-version="5.5.0" xmlns:con="http://eviware.com/soapui/config">
  <con:settings/>
  <con:project name="V3_DolmenWebServices">/Users/aurelien.galpin/ProjetSoapui/DContactV3-soapui-project.xml</con:project>
</con:soapui-workspace>

I think that the XML file project contains old properties based on version 5.4.0 SOAPUI.
Extract of my projet.xml

<?xml version="1.0" encoding="UTF-8"?>
<con:soapui-project id="ff2c8e2f-ba34-4eb9-b98a-96f3b06eb4aa" activeEnvironment="Default" name="V3_DolmenWebServices" resourceRoot="" soapui-version="5.5.0" abortOnError="false" runType="SEQUENTIAL" xmlns:con="http://eviware.com/soapui/config">
  <con:description>Scénarios permettant de tester la non regression fonctionnelle sur DataContact.Base de données piloval : network_id = 2697</con:description>
  <con:settings>
    <con:setting id="com.eviware.soapui.impl.wsdl.actions.iface.tools.soapui.TestRunnerAction@values-local"><![CDATA[<xml-fragment xmlns:con="http://eviware.com/soapui/config">
      <con:entry key="Report Format(s)" value=""/>
      <con:entry key="Host:Port" value=""/>
      <con:entry key="Export JUnit Results" value="true"/>
      <con:entry key="Export All" value="true"/>
      <con:entry key="Save After" value="false"/>
      <con:entry key="Add Settings" value="false"/>
      <con:entry key="WSS Password Type" value=""/>
      <con:entry key="TestSuite" value="&lt;all>"/>
      <con:entry key="Endpoint" value=""/>
      <con:entry key="Select Report Type" value=""/>
      <con:entry key="System Properties" value=""/>
      <con:entry key="Password" value=""/>
      <con:entry key="Print Report" value="false"/>
      <con:entry key="Open Report" value="false"/>
      <con:entry key="Export JUnit Results with test properties" value="true"/>
      <con:entry key="Global Properties" value=""/>
      <con:entry key="Project Properties" value=""/>
      <con:entry key="Project Password" value=""/>
      <con:entry key="TestCase" value="&lt;all>"/>
      <con:entry key="Username" value=""/>
      <con:entry key="user-settings.xml Password" value=""/>
      <con:entry key="TestRunner Path" value=""/>
      <con:entry key="Environment" value="Default"/>
      <con:entry key="Coverage Report" value="false"/>
      <con:entry key="Enable UI" value="false"/>
      <con:entry key="Root Folder" value="/Users/aurelien.galpin/Documents/Templates"/>
      <con:entry key="Ignore Errors" value="true"/>
      <con:entry key="Domain" value=""/>
      <con:entry key="Tool Args" value=""/>
      <con:entry key="Save Project" value="false"/>
      </xml-fragment>]]></con:setting>
    </con:settings>
    <con:interface xsi:type="con:RestService" id="4c6bcc49-5ec0-4af4-9bbd-55292c7b0295" wadlVersion="http://wadl.dev.java.net/2009/02" name="idolData Contact API" type="rest" basePath="/iDolDataContact" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
      <con:description>Data Contact API documentation</con:description>
      <con:settings/>
      <con:definitionCache type="TEXT" rootPart=""/>
      <con:endpoints>
        <con:endpoint>http://beg1-pre.dolmen-tech.com:8080</con:endpoint>
      </con:endpoints>
      <con:resource name="/batch/bdc/{networkNodeId}" path="/batch/bdc/{networkNodeId}" id="133ee00b-5c3d-4fd5-978c-cccb36d66008">
        <con:settings/>
        <con:parameters/>