Cannot install v6 on TFS 2017 Update 3

I am trying to install the OWASP Dependency Check extension from the Visual Studio Marketplace for our on prem version of TFS 2017. The version of the plugin is 6.1.0.1 and I get the following message in the event log after trying to install. If I download the vsix and try to upload manually I get the same error.

Team Foundation Server version: 15.117.27414.0

System.ArgumentException: The asset type
'Tasks/dependency-check-build-task/node_modules/@types/concat-stream/index.d.ts'
is invalid. Asset types may only contain 'A' through 'Z', 'a' through 'z', '0'
through '9', '.' and '-'. The asset type can't have more than one consecutive
'.'. at
Microsoft.VisualStudio.Services.Gallery.WebApi.GalleryUtil.CheckAssetType(String
assetType) at
Microsoft.VisualStudio.Services.Gallery.Server.PublishedExtensionService.FixUpFieldsAndValidateCommon(IVssRequestContext
requestContext, IEnumerable`1 assets, IEnumerable`1 installationTargets,
InstallationTarget[]& installationTargetArray, PublishedExtensionFlags&
flags, Boolean& shouldNotify, Boolean&
isUpdateVstsExtensionInstallationTarget, Boolean isFirstParty) at
Microsoft.VisualStudio.Services.Gallery.Server.PublishedExtensionService.CreateExtensionCommon(IVssRequestContext
requestContext, Stream extensionPackageStream, String requestingPublisherName,
IEnumerable`1 uploadedAssets, Boolean immediateVersionValidation) at
Microsoft.VisualStudio.Services.Gallery.Server.PublishedExtensionService.CreateExtension(IVssRequestContext
requestContext, Stream extensionPackageStream, String requestingPublisherName)
at
Microsoft.VisualStudio.Services.Gallery.Extensions.OnPremPublishedExtensionService.PublishExtensionFromHosted(IVssRequestContext
requestContext, String publisherName, String extensionName, Boolean
onlyUpdateForNewVersion, Boolean blockPreviewToPaidUpgrade)