Compilation error: Expecting to find a type to be declared in a module rules named ‘DlssUtility’ in UE5Rules, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null. This type must derive from the ‘ModuleRules’ type defined by Unreal Build Tool. Reproduce: Upgrade from Unreal Engine 4.27 to 5.1. …

Try copying the plugins to the Engine\Plugins\Marketplace folder. It’s a new requirement since 5.x that marketplace plugins need to go here if you’re installing them with the engine.