Resolver issue
When I call a sequelize operation here for example : "`await File.create({name:"test"})`"
The resolver is block and return nothing. If I remove the sequelize line. It's works.. 

Do you know why I can't call sequelize  ? 

```js
const resolve = async (request, args) => {
      const { file } = args;
      const { filename, createReadStream } = await file;
      const stream = createReadStream();
      await uploadFileToBucket(stream);
      const file = await File.create({name:"test"});
      return file;
});
```

Setup : 
graphql-express