The template root requires exactly one element

NPM run serve requires exactly one element The template root requires exactly one element

Step 1: Check whether the Vetur plug-in is installed. If not, install it as shown below, using VScode

The second step: “Validate vue-html in using eslint-plugin-vue” “Validate vue-html in using eslint-plugin-vue” “Validate vue-html in using eslint-plugin-vue” As in the picture)