SDL Trados Studio 2019, not opening since I installed the plugin SDL Trados Business Manager v5.1.0 Lite

Trados did not open with this message Error "Sdl.Desktop.Platform.CommandBars.IActionService could not be started"

So I followed the instruction below,

https://community.sdl.com/product-groups/translationproductivity/f/studio/3260/error-on-startup-service-sdl-desktop-platform-commandbars-iactionservice-could-not-be-started/82264#82264

Well, in my case the plugins folder was located in c:\programdata\SDL\SDL Trados Studio\15

anyway, after I completed the whole instruction, Trados Studio was still not opening.

I uninstalled and reinstalled SDL Trados Studio and problem is not solved yet. What should I do?