vue/valid-template-root 
enforce valid template root
- ⚙️ This rule is included in all of 
"plugin:vue/vue3-essential",*.configs["flat/essential"],"plugin:vue/essential",*.configs["flat/vue2-essential"],"plugin:vue/vue3-strongly-recommended",*.configs["flat/strongly-recommended"],"plugin:vue/strongly-recommended",*.configs["flat/vue2-strongly-recommended"],"plugin:vue/vue3-recommended",*.configs["flat/recommended"],"plugin:vue/recommended"and*.configs["flat/vue2-recommended"]. 
This rule checks whether every template root is valid.
📖 Rule Details 
This rule reports the template root in the following cases:
🔧 Options 
Nothing.
🚀 Version 
This rule was introduced in eslint-plugin-vue v3.11.0