Solved: The 'AllowDeletion' attribute is not declared.

For two days, I've been trying to get on to creating SiteTemplates in SharePoint 2016. When I'm creating the template, I get the error message as saying. "The 'AllowDeletion' attribute is not declared.". It comes from SiteCoumns that I inserted them into SiteCollection. I have opened the cab file from wsp and then find fields containing attributes such as <FieldRef ID = "{23c92184-aa69-47ed-8685-2a9e7ac66c86}" Name = "ArendeType" AllowDeletion = "TRUE" /> All columns and content types were created in the same SiteCollection.

Is there enyone that can help me on this. This is a section of the ElementsContentType.xml file in the cabfile for the site template (wsp-file)

<ContentType ID="0x010100E24BBAB22E21AB4BB8CA45C9D77AA9B9" Name="PDSAdvokat" Group="PDSAdvokat" Overwrite="TRUE">
            <Folder TargetName="_cts/PDSAdvokat" />
            <FieldRefs>
                  <FieldRef ID="{c042a256-787d-4a6f-8a8a-cf6ab767f12d}" Name="ContentType" />
                  <FieldRef ID="{5f47e085-2150-41dc-b661-442f3027f552}" Name="SelectFilename" />
                  <FieldRef ID="{8553196d-ec8d-4564-9861-3dbe931050c8}" Name="FileLeafRef" Required="TRUE" />
                  <FieldRef ID="{8c06beca-0777-48f7-91c7-6da68bc07b69}" Name="Created" Hidden="TRUE" />
                  <FieldRef ID="{fa564e0f-0c70-4ab9-b863-0177e6ddd247}" Name="Title" Required="FALSE" ShowInNewForm="FALSE" ShowInEditForm="TRUE" />
                  <FieldRef ID="{28cf69c5-fa48-462a-b5cd-27b6f9d2bd5f}" Name="Modified" Hidden="TRUE" />
                  <FieldRef ID="{822c78e3-1ea9-4943-b449-57863ad33ca9}" Name="Modified_x0020_By" Hidden="FALSE" />
                  <FieldRef ID="{4dd7e525-8d6b-4cb4-9d3e-44ee25f973eb}" Name="Created_x0020_By" Hidden="FALSE" />
                  <FieldRef ID="{3b41b3d0-79ee-493a-a651-17030bc35e4e}" Name="Ansvarig" AllowDeletion="TRUE" />
                  <FieldRef ID="{d2894275-a868-4b46-a829-0a2fe7f9f95b}" Name="AnsvarigArende" AllowDeletion="TRUE" />
                  <FieldRef ID="{373ed99b-8dbd-4c4a-8177-b3f509804ccf}" Name="ArendeInformation" AllowDeletion="TRUE" />
                  <FieldRef ID="{a56295bf-0b59-4fc2-88af-5a739137650d}" Name="DatumSidhuvud" AllowDeletion="TRUE" />
                  <FieldRef ID="{308f4465-fed1-4db3-9234-8e61acb51c84}" Name="Dokumentklass" AllowDeletion="TRUE" />
                  <FieldRef ID="{4b1a5e00-d153-400c-bdfc-97b4eb7885f5}" Name="GDPRDokument" AllowDeletion="TRUE" />
                  <FieldRef ID="{6fbb8d82-c983-4bbb-b6e5-6dbfee9059b1}" Name="Klient" AllowDeletion="TRUE" />
                  <FieldRef ID="{426dd544-3d2e-4294-b0d5-753bf49b748b}" Name="KlientNr" AllowDeletion="TRUE" />
                  <FieldRef ID="{96922544-a3ed-409f-b880-4b4936e1bafa}" Name="KM_x0020_dokument" AllowDeletion="TRUE" />
                  <FieldRef ID="{6200977b-f186-4018-9929-f4dedc5c6cec}" Name="Arende" AllowDeletion="TRUE" />
                  <FieldRef ID="{b2ae9fcd-dd4b-444b-8577-8f6f87a17350}" Name="ArendeNr" AllowDeletion="TRUE" />
                  <FieldRef ID="{23c92184-aa69-47ed-8685-2a9e7ac66c86}" Name="ArendeTyp" AllowDeletion="TRUE" />
            </FieldRefs>

Ola