[Exercise] Linear Data Structures - Lists; [Task] 06. Reversed List - Compile Error

Здравейте в judge когато пусна решението си за упражнение Linear Data Structures - Lists - C# Exercise.
За задача 06. Reversed List ми дава следния компилационен error:

Compiled file is missing. Compiler output: Test.003.cs(9,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.002.cs(9,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.005.cs(9,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.004.cs(9,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.007.cs(9,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.006.cs(9,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.008.cs(10,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.008.cs(18,30): error CS1579: foreach statement cannot operate on variables of type 'ReversedList' because 'ReversedList' does not contain a public definition for 'GetEnumerator' [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj] Test.001.cs(9,24): error CS0246: The type or namespace name 'ReversedList<>' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Administrator\AppData\Local\Temp\eoaqoewy.naw\ImplementReversedList\ImplementReversedList.csproj]

Изпращам проекта със solution-a и Implementation-a на ReversedList<T>, но judge-a не го намира.
Някой има ли идея защо може да се случва?