problem about making comment line in Vs Code

Issue

I used to make an uncomment line as a commented one by these hot keys ctrl+/ but I don't know why recently I couldn't do that. as I try it my line changes from this:

 <div class="form-outline mb-4">

to this:

and in fact it doesn't changes to a comment line

anybody know how can I fix this problem?

Solution

Make sure your HTML is selected on the status bar.

You can change it by, Ctrl + Shift + P and then Change Language Mode. Set to HTML.

Answered By - Debashish