Errore logout: Issuer non presente nella AuthnRequest

Buongiorno,
sto riscontrando delle delle difficoltà ed eseguire il logout utilizzando l’app di test spid-testenv2.
Quando provo ad eseguire il logout mi viene restituito il seguente messaggio:
“Issuer non presente nella AuthnRequest”

Riporto qui la chiamata effettuta:

<?xml version="1.0" encoding="UTF-8"?>
<saml2p:LogoutRequest xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion" ID="_c7129dfb-9387-4dd0-b27c-adfaad4d9093" Version="2.0" IssueInstant="2020-12-14T17:01:14.787Z" Destination="WSO2" Reason="urn:oasis:names:tc:SAML:2.0:logout:user" NotOnOrAfter="2020-12-14T17:11:14.7870689Z">
   <saml2:Issuer NameQualifier="https://localhost:44376" Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity">https://localhost:44376</saml2:Issuer>
   <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
      <SignedInfo>
         <CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
         <SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />
         <Reference URI="#_c7129dfb-9387-4dd0-b27c-adfaad4d9093">
            <Transforms>
               <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
               <Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
            </Transforms>
            <DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
            <DigestValue>fgI0AUbWHiH5BoTm341eZDgBRjjGnvawkg/+LJWHKE0=</DigestValue>
         </Reference>
      </SignedInfo>
      <SignatureValue>u819qxEZeR/+S4YHKf2d9DDkiZHx8E4UobgSHjIJz1Cn6BXibAUGQ3PDfHkos/26lDaW5bP1qHN4A/RQNx6V5I4a+Qs5jm1XiQ10zLLiZeRovAI+l8AnEAZDq9r7yiy2oAxt9GvmyCk/wpYxJmLkj+d5zzV0Dj5oV09Y6+WAotoUHRAnv6x+14TVu32CVT2otzC8o2HKcG1C9iRPTV3rUG/2xmy+OvFSg5cGeJZlny2y14RfQTYUQIXkAdx0C7ckaArSsCLKg95cJigzxdKWJllyciL4HGRxsOEvJLuvRh0Fuk7xvlFV4C/Mb3LwA0euYdNetqK2yA52WKL5NavnmQ==</SignatureValue>
      <KeyInfo>
         <X509Data>
            <X509Certificate>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</X509Certificate>
         </X509Data>
      </KeyInfo>
   </Signature>
   <saml2:NameID NameQualifier="https://localhost:44376" Format="urn:oasis:names:tc:SAML:2.0:nameid-format:transient">id_a007df1c76997c52d54c6e1c45d054be6ddbd14e</saml2:NameID>
   <saml2p:SessionIndex>id_bdd6e841660925af25f2d37512a1be6812a80d21</saml2p:SessionIndex>
</saml2p:LogoutRequest>

Sto commettendo qualche errore?
Grazie in anticipo