Cannot find the declaration of element 'xenc:EncryptedData'.

Hi everyone, I'm creating a project with WS-Security and trying to comunicate with the spring BE with SoapUI, i've imported the WSDL and the certificate to create the authentication but when SoapUI tries to contact the BE it returns a fault message that says:
"Cannot find the declaration of element 'xenc:EncryptedData'."

The configuration of my Outgoing WS-Security configuration is attached 

Thanks in advance for any advice