XCOM 2 WOTC failed to open files

[SueLiz19]

i am a modder and i also port models to sfm and gmod, i recently tried to port the models from war of the chosen but i get this error, what does it mean? is there a way to fix it?

assertion failed: len < ARRAY_COUNT(buf)

Name: 25 <- UnPackage::LoadNameTable2 <- UnPackage::UnPackage: Startup.upk, ver=0/32, game=ue1 <- UnPackage::LoadPackage(info): Startup.upk <- UnPackage::LoadPackage(name): startup_xxx <- UnPackage::CreateImport: AdventPriest_SF.upk:33 <- UnPackage::SerializeUObject <- TArray::Serialize: 0/3 <- SerializeFMaterialResource <- LoadObject: Material3'AdventPriest_SF.Alien_SD_Cloth', pos=BACC5, ver=845/120, game=ue3 <- UObject::EndLoad <- LoadWholePackage: AdventPriest_SF.upk <- CUmodelApp::ShowPackageUI <- Main: umodel_build=1572