Converting the attached STL file to HTML produces a more or less empty file.
(Firefox display it as empty, Chrome renders some placeholder icon)
STL Problem.zip (1.8 MB)
The problem happens with GroupDocs.Viewer 23.1 …...Viewer Product Family dotnet , document-viewer Clemens_Pestuka March...Viewer: Could not load file or assembly ‘Aspose.CAD, Version=23.2...