Error after installing and uninstaling Edge Extension to VSC to launch HTML file

I installed the Edge Extension, but after it it throws an error:'SyntaxError: invalid syntax'. After uninstalling extension, and removing Edge from launch.json, still there is an error. Code:

<center><h3>text</h3></center>
<center><p>text<b>3t</b></p>
<p>text<i>text</i>TF2<b><i>kodować</i></b></p>

<center><h3>text</h3></center>
^
SyntaxError: invalid syntax