ReferenceError: 'twttr' is undefined

View details in Rollbar: [https://rollbar.com/wossname/woss.name/items/25/](https://rollbar.com/wossname/woss.name/items/25/)

```

ReferenceError: 'twttr' is undefined
  File "code", line 1, in Global code (Unknown script
  File "https://www.googletagmanager.com/gtm.js", line 77, in Anonymous function
  File "https://www.googletagmanager.com/gtm.js", line 78, in Anonymous function
```