Unable to run Uipath code receiving Activation/validation Error

Hi Team, Need help.
I am not at all able to run any of the program using UiPath

Studio. As I am receiving a error which says "Main.xaml: An error occurred during the activation of a particular registration. See the inner exception for details. Registration: Activator = WorkflowFileValidator (ReflectionActivator), Services = [UiPath.Studio.Plugin.Workflow.Validation.WorkflowFileValidator, UiPath.Studio.Plugin.Workflow.Validation.IWorkflowFileValidator], Lifetime = Autofac.Core.Lifetime.CurrentScopeLifetime, Sharing = None, Ownership = ExternallyOwned —> An error occurred during the activation of a particular registration. See the inner exception for details. Registration: Activator = LightValidationService (ReflectionActivator), Services = [UiPath.Studio.Plugin.Workflow.Validation.LightValidationService, "

I have re-installed the UiPath Studio multiple times by deleting all the related folders still no luck.

really required your help much appreciated.
Regards,
Shiva Murthy.