It looks like you tried to parse html using a regex.
For reference: https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags#1732454
Hmm usually this is where you use the "reset" command in your terminal. Yes there's a command that's specifically for dispelling demons. Not sure how do in vscode, as I am a NeoVim elitist asshole