I have some code thats gets files from a service. If a file is changed i will first update the file and after delete the old versions of this content (do this to save disk space)

When i try to delete old versions i get this error in my logs

EPiServer.Core.AccessDeniedException: Access was denied to content 13893_94956. The required access level was "Delete".

This line fails

versionRepository.Delete(epiFileVersion.ContentLink);

How to fix this?

Entire code

// Will delete previous versions of pdf file
public static void DeletePreviousGenericMediaVersion(ContentReference epiFileRef)
{
var epiFileVersions = versionRepository.List(epiFileRef);

foreach (var epiFileVersion in epiFileVersions)
{
// Delete all unpublished file versjons
if (epiFileVersion.Status != VersionStatus.Published)
{
// Before we delete the content we need to clean up blob data on disk. To do this we need BinaryData ID
var epiFileVersjonContent = Repository.Get(epiFileVersion.ContentLink);
BlobFactory.Delete(epiFileVersjonContent.BinaryData.ID);
versionRepository.Delete(epiFileVersion.ContentLink);
}
}
}