How to read an XML with prefixes and without prefixes in Freemarker

I'm trying to read an XML in freemarker but I can not make it read the contents of it. Here I leave the XML:

--------- [XML] --------------

<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<Comprobantes>
    <Comprobante>
        <informacionOrganismo>
            <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:ccts="urn:un:unece:uncefact:documentation:2" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:ext="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:qdt="urn:oasis:names:specification:ubl:schema:xsd:QualifiedDatatypes-2" xmlns:sac="urn:sunat:names:specification:ubl:peru:schema:xsd:SunatAggregateComponents-1" xmlns:udt="urn:un:unece:uncefact:data:specification:UnqualifiedDataTypesSchemaModule:2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
                <ext:UBLExtensions>
                    <ext:UBLExtension>
                        <ext:ExtensionContent>
                            <sac:AdditionalInformation>
                                <sac:AdditionalMonetaryTotal>
                                    <cbc:ID>0001</cbc:ID>
                                    <cbc:PayableAmount currencyID="PEN">100.00</cbc:PayableAmount>
                                </sac:AdditionalMonetaryTotal>
                                <sac:AdditionalMonetaryTotal>
                                    <cbc:ID>0002</cbc:ID>
                                    <cbc:PayableAmount currencyID="PEN">0.00</cbc:PayableAmount>
                                </sac:AdditionalMonetaryTotal>
                                <sac:AdditionalMonetaryTotal>
                                    <cbc:ID>0003</cbc:ID>
                                    <cbc:PayableAmount currencyID="PEN">0.00</cbc:PayableAmount>
                                </sac:AdditionalMonetaryTotal>
                                <sac:AdditionalMonetaryTotal>
                                    <cbc:ID>0004</cbc:ID>
                                    <cbc:PayableAmount currencyID="PEN">0</cbc:PayableAmount>
                                </sac:AdditionalMonetaryTotal>
                                <sac:AdditionalProperty>
                                    <cbc:ID>0005</cbc:ID>
                                    <cbc:Value>CIEN SOLES</cbc:Value>
                                </sac:AdditionalProperty>
                            </sac:AdditionalInformation>
                        </ext:ExtensionContent>
                    </ext:UBLExtension>
                </ext:UBLExtensions>
                <cbc:UBLVersionID>2.0</cbc:UBLVersionID>
                <cbc:CustomizationID>1.0</cbc:CustomizationID>
                <cbc:ID>F001-00000001</cbc:ID>
                <cbc:IssueDate>2018-08-06</cbc:IssueDate>
                <cbc:InvoiceTypeCode>01</cbc:InvoiceTypeCode>
                <cbc:DocumentCurrencyCode>PEN</cbc:DocumentCurrencyCode>
                <cac:AccountingSupplierParty>
                    <!--transaction.subsidiary.taxidnum-->
                    <cbc:CustomerAssignedAccountID>22222222222</cbc:CustomerAssignedAccountID>
                    <cbc:AdditionalAccountID>0</cbc:AdditionalAccountID>
                    <cac:Party>
                        <!-- legalname -->
                        <cac:PartyName>
                            <cbc:Name>Place</cbc:Name>
                        </cac:PartyName>
                        <cac:PostalAddress>
                            <cbc:ID>555555</cbc:ID>
                            <cbc:StreetName>direccion 1</cbc:StreetName>
                            <cbc:CityName></cbc:CityName>
                            <cbc:CountrySubentity></cbc:CountrySubentity>
                            <cbc:District></cbc:District>
                            <cac:Country>
                                <cbc:IdentificationCode>PE</cbc:IdentificationCode>
                            </cac:Country>
                        </cac:PostalAddress>
                        <cac:PartyLegalEntity>
                            <cbc:RegistrationName>Lugar 1                   </cac:Party>
                </cac:AccountingSupplierParty>
                <cac:AccountingCustomerParty>
                    <cbc:CustomerAssignedAccountID>33333333333</cbc:CustomerAssignedAccountID>
                    <cbc:AdditionalAccountID>6</cbc:AdditionalAccountID>
                    <cac:Party>
                        <cac:PhysicalLocation>
                            <cbc:Description></cbc:Description>
                        </cac:PhysicalLocation>
                        <cac:PartyLegalEntity>
                            <cbc:RegistrationName>lugar 0 PE S.A</cbc:RegistrationName>
                        </cac:PartyLegalEntity>
                    </cac:Party>
                </cac:AccountingCustomerParty>
                <cac:TaxTotal>
                    <cbc:TaxAmount currencyID="PEN">1000.00</cbc:TaxAmount>
                    <cac:TaxSubtotal>
                        <cbc:TaxAmount currencyID="PEN">1000.00</cbc:TaxAmount>
                        <cac:TaxCategory>
                            <cac:TaxScheme>
                                <cbc:ID>0001</cbc:ID>
                                <cbc:Name>IGV</cbc:Name>
                                <cbc:TaxTypeCode>VAT</cbc:TaxTypeCode>
                            </cac:TaxScheme>
                        </cac:TaxCategory>
                    </cac:TaxSubtotal>
                </cac:TaxTotal>
                <cac:LegalMonetaryTotal>
                    <cbc:PayableAmount currencyID="PEN">1000.00</cbc:PayableAmount>
                </cac:LegalMonetaryTotal>
                <cac:InvoiceLine>
                    <cbc:ID>1</cbc:ID>
                    <cbc:InvoicedQuantity unitCode="NIU">2</cbc:InvoicedQuantity>
                    <cbc:LineExtensionAmount currencyID="PEN">1000</cbc:LineExtensionAmount>
                    <cac:PricingReference>
                        <cac:AlternativeConditionPrice>
                            <!-- 1000.00 -->
                            <cbc:PriceAmount currencyID="PEN">1000.00</cbc:PriceAmount>
                            <cbc:PriceTypeCode>01</cbc:PriceTypeCode>
                        </cac:AlternativeConditionPrice>
                    </cac:PricingReference>
                    <!-- TAXRATE : 0.18 - 0.18 -->
                    <cac:TaxTotal>
                        <cbc:TaxAmount currencyID="PEN">1000.00</cbc:TaxAmount>
                        <cac:TaxSubtotal>
                            <cbc:TaxAmount currencyID="PEN">1000.00</cbc:TaxAmount>
                            <cac:TaxCategory>
                                <cbc:TaxExemptionReasonCode>10</cbc:TaxExemptionReasonCode>
                                <cac:TaxScheme>
                                    <cbc:ID>1000</cbc:ID>
                                    <cbc:Name>IGV</cbc:Name>
                                    <cbc:TaxTypeCode>VAT</cbc:TaxTypeCode>
                                </cac:TaxScheme>
                            </cac:TaxCategory>
                        </cac:TaxSubtotal>
                    </cac:TaxTotal>
                    <cac:Item>
                        <cbc:Description>Item</cbc:Description>
                        <cac:SellersItemIdentification>
                            <cbc:ID>ITM0000001</cbc:ID>
                        </cac:SellersItemIdentification>
                    </cac:Item>
                    <cac:Price>
                        <cbc:PriceAmount currencyID="PEN">1000</cbc:PriceAmount>
                    </cac:Price>
                </cac:InvoiceLine>
                <cac:InvoiceLine>
                    <cbc:ID>2</cbc:ID>
                    <cbc:InvoicedQuantity unitCode="NIU">1</cbc:InvoicedQuantity>
                    <cbc:LineExtensionAmount currencyID="PEN">1000</cbc:LineExtensionAmount>
                    <cac:PricingReference>
                        <cac:AlternativeConditionPrice>
                            <!-- 1000.00 -->
                            <cbc:PriceAmount currencyID="PEN">1000.00</cbc:PriceAmount>
                            <cbc:PriceTypeCode>01</cbc:PriceTypeCode>
                        </cac:AlternativeConditionPrice>
                    </cac:PricingReference>
                    <!-- TAXRATE : 0.18 - 0.18 -->
                    <cac:TaxTotal>
                        <cbc:TaxAmount currencyID="PEN">1000.00</cbc:TaxAmount>
                        <cac:TaxSubtotal>
                            <cbc:TaxAmount currencyID="PEN">1000.00</cbc:TaxAmount>
                            <cac:TaxCategory>
                                <cbc:TaxExemptionReasonCode>10</cbc:TaxExemptionReasonCode>
                                <cac:TaxScheme>
                                    <cbc:ID>1000</cbc:ID>
                                    <cbc:Name>IGV</cbc:Name>
                                    <cbc:TaxTypeCode>VAT</cbc:TaxTypeCode>
                                </cac:TaxScheme>
                            </cac:TaxCategory>
                        </cac:TaxSubtotal>
                    </cac:TaxTotal>
                    <cac:Item>
                        <cbc:Description>Item2</cbc:Description>
                        <cac:SellersItemIdentification>
                            <cbc:ID>ACC00001</cbc:ID>
                        </cac:SellersItemIdentification>
                    </cac:Item>
                    <cac:Price>
                        <cbc:PriceAmount currencyID="PEN">1000</cbc:PriceAmount>
                    </cac:Price>
                </cac:InvoiceLine>
            </Invoice>
            <TextosLibres>
                <TextoLibre1></TextoLibre1>
                <TextoLibre2></TextoLibre2>
                <TextoLibre3>Net 0</TextoLibre3>
            </TextosLibres>
        </informacionOrganismo>
    </Comprobante>
</Comprobantes>