Error after imported package

[AnhNThust]

1. VFXToolbox\Editor\ImageSequencer\ImageSequencer.Export.cs(193,82): error CS0117: 'TextureImporterShape' does not contain a definition for 'Texture2DArray'
2. VFXToolbox\Editor\ImageSequencer\ImageSequencer.Export.cs(194,46): error CS1061: 'TextureImporterSettings' does not contain a definition for 'flipbookColumns' and no accessible extension method 'flipbookColumns' accepting a first argument of type 'TextureImporterSettings' could be found (are you missing a using directive or an assembly reference?)
3. VFXToolbox\Editor\ImageSequencer\ImageSequencer.Export.cs(195,46): error CS1061: 'TextureImporterSettings' does not contain a definition for 'flipbookRows' and no accessible extension method 'flipbookRows' accepting a first argument of type 'TextureImporterSettings' could be found (are you missing a using directive or an assembly reference?)