Parse.Initialize выдает IOException с Parse .NET SDK в .NET Core 2.2, размещенном на Heroku

Следующий код

ParseClient.Initialize (new ParseClient.Configuration
{
    ApplicationID = "APPID",
    Key = ".NET KEY",
    ServerURI = "SERVER URL"
});

бросает System.IO.IOException: The file '/app/heroku_output/[HEROKU APP NAME]' already exists.

Трассировки стека:

at System.IO.FileSystem.CreateDirectory(String fullPath)
at System.IO.Directory.CreateDirectory(String path)
at Parse.Internal.Utilities.StorageManager.get_PersistentStorageFileWrapper()
at Parse.Common.Internal.StorageController..ctor()
at Parse.Core.Internal.ParseCorePlugins.get_StorageController()
at Parse.Core.Internal.ParseCorePlugins.get_CurrentUserController()
at Parse.Core.Internal.ParseCorePlugins.<get_SubclassingController>b__54_0()
at Parse.Core.Internal.ObjectSubclassingController.RegisterSubclass(Type type)
at Parse.ParseClient.Initialize(Configuration configuration)
at api.Startup.ConfigureServices(IServiceCollection services) in /tmp/build_ee0c61a720b09ce072787bbc64b4001d/Startup.cs:line 50

• .NET Core 2.2.104
• Heroku с пакетом сборки https://github.com/jincod/dotnetcore-buildpack#v2.2.102
• Parse .NET SDK v2.0.0 (создан из основной ветки на https://github.com/parse-community/Parse-SDK-dotNET)