The type or namespace name 'ReactiveMarbles' could not be found (are you missing a using directive or an assembly reference?)

[Snailya]

I am writing an VSTO addin for Visio. The target framework is 4.7.2
When compile the project, it shows a build error as the title.
I've tried to add

<IncludePackageReferencesDuringMarkupCompilation>true</IncludePackageReferencesDuringMarkupCompilation>
<UseWPF>true</UseWPF>

But it doesn't work.
Anyone could help me workaround this?

[sven-she]

I meet the same question and did not resolve yet