Fixed warning messages when deploying

Example output:

```
Warning. Error encountered while saving cache /tmp/build_f613a4e9-293e-4079-a092-
be3972ddc6b9/tmp/cache/sass/3fa90407596578a83998f07d801b82b0dd48190
/welcome.css.scssc: can't dump anonymous class #<Class:0x007fc16e16f1e8>
```