Html – “adobe flash player has stopped a potentially unsafe operation” in HTML Flash loaded

you must add the swf file location (just c:\ or exact path) to the trusted list in Adobe FlashPlayer Settings Manager in order to allow a local swf connect the internet

For Node.js applications, check your configuration:

app.use(express.static(__dirname + '/public'));

Notice that /public does not have a forward slash at the end, so you will need to include it in your href option of your HTML:

href="/css/style.css">

If you did include a forward slash (/public/) then you can just do href="css/style.css".