Unable to configure a project using RPA studio 5.0.0

[Denis_Grafion]

As a student in the course "Build a Robot using Design Studio"  I try to create and configure a New Unattended project Into RPA design Studio (5.0.0, run as admin). I give a name, a location to the project and click on OK.

Then several features are download and installed, (like Essential toolkit, Universal App Connector, etc...).  but after a while during this phasis, an error occurs, (every time I tried it appears on a different feature).

Then the studio is blocked, and the project is not created.

I check the prerequisit (win 10, .NET4.8 etc...) everything seems to match. but I cannot create any project.

Could  anybody help me, as I'm a complete beginner into SNOW and RPA ?  

I gave the more stuff I can in attached files.

The message I found in the logs is always the same but on different plugin (all are present and accessible in the given folder).

Unable to load 'C:\Users\xxx\AppData\Local\ServiceNowRPA\nowlearning-nlinst01395326-001.lab.service-now.com\Runtime\a2d55069-f2ef-458d-bb23-c054f97512c7\2.0\UTL.RPA.CONNECTORS.UAC.dll' from plugin 'a2d55069-f2ef-458d-bb23-c054f97512c7'.<Exception Position='0,0' methodName='LoadPlugin' fileName=''><Message>Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.<Message><StackTrace> at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)

thanks a lot for your help.