Building UE4 project with CI (Jenkins) doesn't produce an executable (.exe)

I have set up batch files to build my UE4.20.3-release project with Jenkins. I compile first, then build the project, and finally cook the files and package for Win64 & Development. Packaging on my local machine works fine, when using packaging > Win64. Other projects seem to build fine on the same server. My project only produces a single PAK-file in PROJECT_NAME/Content/Paks/. Here are the build logs: Development, Shipping.

Batch files (split up in stages to push build notifications to Slack):

1. UnrealBuildTool.exe -projectfiles -project="%2" -game -progress

2. msbuild.exe "%2" /t:build /p:Platform=Win64;Configuration="Development";verbosity=diagnostic

3. UnrealEngine-4.20.3-release\Engine\Build\BatchFiles\RunUAT.bat BuildCookRun -build -project="%2" -allmaps -noP4 -platform=Win64 -clientconfig=Development

4. UnrealEngine-4.20.3-release\Engine\Build\BatchFiles\RunUAT.bat BuildCookRun -cook -project="%2" -allmaps -nop4 -platform=Win64 -clientconfig=Development -nocompile -pak -package -stage -archive -archivedirectory="%3"

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When packaging is done, all I have inside the WindowsNoEditor folder is a folder with the project name and a single PAK file inside. No executable or Manifest_DebugFiles_Win64.txt, nor Manifest_NonUFSFiles_Win64.txt and no Engine folder.

I have tried other options for the cooking stage (4.), but it results in the same single PAK file. I have tried different options for packaging within the editor, which end up in DefaultGame.ini. Build logs here.

Things I've tried:

• Adding serverconfig doesn't help

• Adding prereqs doesn't help

• Adding cpp source files instead of just having an empty Source folder doesn't help

• Removing -package param doesn't help

• Updating VS (VS2017) doesn't help

• https://answers.unrealengine.com/questions/814028/view.html Answers didn't help

Any suggestions as to how to produce an executable or to improve the build steps for Jenkins is very much appreciated!