In vscode go to the debug panel and click on the cog in the top right.
Change the content of launch.json to
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "chrome",
"request": "launch",
"name": "Launch Chromium",
"url": "http://localhost:4200",
"runtimeExecutable": "/usr/bin/chromium",
"webRoot": "${workspaceFolder}",
"sourceMaps": true,
// this enables chromium to be launched even if it is alredy open
"userDataDir": "${workspaceRoot}/.vscode/chrome",
}
]
}
Be sure to have installed the extension Debugger for Chrome.