Looks like a comment is missing near the bottom of the provided .gitignore file. The last three lines of the provided file are:
VSCode Files
/.vscode/*
BuildingEscape.code-workspace
But this should really be:
# VSCode Files
/.vscode/*
BuildingEscape.code-workspace
Also, due to the VSCode Intellisense bug in Unreal v4.25 you may actually wish to include the .vscode folder in your repo, so that you store the defines fix mentioned in this lecture. To include this folder (along with the bug fix) in your repo you will need to remove the /.vscode/* line.