Bug Scene provider doesn't work

Hi,

I'm new to UTF and I run into an issue while testing it. I'm basically reproducing the code from the 2019 Copenhagen showcase and I have this error when my scene provider returns 2 scenes.

An exception was thrown while loading the test.

System.ArgumentNullException: pathName

Parameter name: Argument pathName must not be null

  at NUnit.Framework.Guard.ArgumentNotNull (System.Object value, System.String name) [0x00019] in <10b6135e63434fdba4fc6c109928ab3b>:0

  at NUnit.Framework.Guard.ArgumentNotNullOrEmpty (System.String value, System.String name) [0x00001] in <10b6135e63434fdba4fc6c109928ab3b>:0

  at NUnit.Framework.Internal.Test..ctor (System.String pathName, System.String name) [0x00008] in <10b6135e63434fdba4fc6c109928ab3b>:0

  at NUnit.Framework.Internal.TestSuite..ctor (System.String parentSuiteName, System.String name) [0x0000b] in <10b6135e63434fdba4fc6c109928ab3b>:0

  at NUnit.Framework.Internal.ParameterizedFixtureSuite..ctor (NUnit.Framework.Interfaces.ITypeInfo typeInfo) [0x0000d] in <10b6135e63434fdba4fc6c109928ab3b>:0

  at NUnit.Framework.Internal.Builders.DefaultSuiteBuilder.BuildMultipleFixtures (NUnit.Framework.Interfaces.ITypeInfo typeInfo, System.Collections.Generic.IEnumerable`1[T] fixtures) [0x00001] in <10b6135e63434fdba4fc6c109928ab3b>:0

  at NUnit.Framework.Internal.Builders.DefaultSuiteBuilder.BuildFrom (NUnit.Framework.Interfaces.ITypeInfo typeInfo) [0x000b1] in <10b6135e63434fdba4fc6c109928ab3b>:0

I linked my class file.
I also linked a gif of the bug occuring in my editor.

Is it a bug from UTF or I did something wrong?

Cheers.