Build command fails

Hello,
I am using Dinomite-Studios/unity-azure-pipelines-tasks (https://github.com/Dinomite-Studios/unity-azure-pipelines-tasks) to create builds inside Azure.
In one of the tasks, the UnityEditor.exe is called with some parameters:
[command]"C:\Program Files\Unity\Hub\Editor\2019.1.0f2\Editor\Unity.exe" -batchmode -buildTarget Win64 -projectPath D:\a\1\s\Project -executeMethod AzureDevOps.PerformBuild -logfile D:\a\1\s\logs\Editor.log
and it fails saying that there are some scripting errors.
Looking inside the Editor.log I find some errors related to IronPython API.

Assets\External\...\3rdParty\PythonIntegration\PythonBehaviour.cs(2,17): error CS0234: The type or namespace name 'Scripting' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?)

The problem is that the build from Editor (File->Build Settings...) works fine - no error is reported; also it works if I use a simple BuildPipeline call:
BuildPipeline.BuildPlayer(scenes, @"C:\...\Builds\App.exe", BuildTarget.StandaloneWindows64, BuildOptions.None);

Any ideas why the build fails in this case?

executeMethod AzureDevOps.PerformBuild
https://github.com/Dinomite-Studios...5b6083c8ed9a752db2dc4bd5dab046/AzureDevOps.cs