Issue on the opening

[PasqualeBasilio]

System.NullReferenceException: Object reference not set to an instance of an object
at CSharpShellCore.IDE.CSharpProject.set_CurrentSourceFile(SourceFile value) in C:\Users\rados\Source\Repos\CSharpShellCore\CSharpShellCore\CSharpShellWorkspace\CSharpProject.cs:116 [116:17-116:138]
at CSharpShellCore.IDE.CSharpProject.LoadXml(Boolean isVb, String xml) in C:\Users\rados\Source\Repos\CSharpShellCore\CSharpShellCore\CSharpShellWorkspace\CSharpProject.cs:635 [635:8-635:57]
at CSharpShellCore.IDE.CSharpProject.Load() in C:\Users\rados\Source\Repos\CSharpShellCore\CSharpShellCore\CSharpShellWorkspace\CSharpProject.cs:198 [198:17-198:32]
at CSharpShellCore.IDE.Workspace.Init(IProject project, Boolean setAsMainProject) in C:\Users\rados\Source\Repos\CSharpShellCore\CSharpShellCore\CSharpShellWorkspace\Workspace.cs:1242 [1242:5-1242:20]
at CSharpShellCore.Activities.MainActivity+<>c__DisplayClass399_1.b__3() in C:\Users\rados\Source\Repos\CSharpShellCore\CSharpShellCore\Platforms\Android\Activities\MainActivity_code.cs:5911 [5911:26-5911:55]
at CSharpShellCore.Activities.MainActivity+d__399.MoveNext() in C:\Users\rados\Source\Repos\CSharpShellCore\CSharpShellCore\Platforms\Android\Activities\MainActivity_code.cs:5911 [5911:5-5911:57]