I open Unreal Engine It show's the error which is the plug in is missing?

Weird. Does it load if you disable them via editing the .uproject file like so

{
	"FileVersion": 3,
	"EngineAssociation": "4.27",
	"Category": "",
	"Description": "",
	"Modules": [
		{
			"Name": "MyProject",
			"Type": "Runtime",
			"LoadingPhase": "Default"
		}
	],
	"Plugins": [
		{
			"Name": "AnimationSharing",
			"Enabled": false
		},
        {
            "Name": "SteamVR",
            "Enabled": false
        }
	]
}

The plugin part is the addition.