The Type or namespace does not exist

Using Visual Studio 2019 Enterprise, BIMLExpress will not generate ssis packages. For all colleages we get the following error
Error 0 The type or namespace name 'Data' does not exist in the namespace 'System' (are you missing an assembly reference?). In Script Project 'TaskScriptProject1': \ScriptMain.cs 3 23
Error 0 The type or namespace name 'Windows' does not exist in the namespace 'System' (are you missing an assembly reference?). In Script Project 'TaskScriptProject1': \ScriptMain.cs 5 23
Error 0 The type or namespace name 'ApplicationSettingsBase' does not exist in the namespace 'System.Configuration' (are you missing an assembly reference?). In Script Project 'TaskScriptProject1': \Designer\Settings.designer.cs 15 75
Error 0 The type or namespace name 'ComponentModel' does not exist in the namespace 'System' (are you missing an assembly reference?). In Script Project 'TaskScriptProject1': \Designer\Resources.designer.cs 42 25
Error 0 The type or namespace name 'ComponentModel' does not exist in the namespace 'System' (are you missing an assembly reference?). In Script Project 'TaskScriptProject1': \Designer\Resources.designer.cs 59 25
Error 0 The type or namespace name 'CodeDom' does not exist in the namespace 'System' (are you missing an assembly reference?). In Script Project 'TaskScriptProject1': \Designer\Resources.designer.cs 25 21

We cannot be certain of issue without a minimal code example. Most likely, this is due to missing assembly references in your code. Be sure to supply the necessary assembly references in the "AssemblyReferences" element of your script project tag.

This is the relevant documentation: https://docs.varigence.com/biml-reference/language-reference/Varigence.Languages.Biml.Script.AstTaskScriptProjectNode

-Varigence Support