What am I missing? Sentry is not defined

Hi all.
I am sorry for this newbie question but can anyone point me in the right direction please?
I keep getting ‘Sentry is not defined’. Thank you.

<script script-src="https://browser.sentry-cdn.com/6.0.2/bundle.tracing.min.js" integrity="sha384-bYx088otr2KmdfnnyvGJs7h9x/AJcHNDL394J5UapIAFn9eeEPTRHf1qFs7zvXxo" crossorigin="anonymous"></script>

	dsn:'https://[token omitted]@xxxxx.ingest.sentry.io/yyyyyyy',
		integrations: [new Sentry.Integrations.BrowserTracing()],
		tracesSampleRate: 1.0,

This is resolved. I was using a browser with pop-up blockers which prevented the SDK from downloading.