# 07. __Troubleshooting__

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## FAQ

- [Where can I find some Flow tutorials?](#)
- [Why do some components disappear when I applied flow?](#)
- [How can I extend existing Total.js application?](#)
- [Can I trust to Flow pred-defined templates?](#)

---

#### Where can I find some Flow tutorials?

- [Flow tutorials on YouTube](https://www.youtube.com/results?search_query=Total.js+Flow)
- [Blog posts](https://blog.totaljs.com/blogs/tutorials/?search=flow)

#### Why do some components disappear when I applied Flow?

The problem can be in message size limit. You need to increase it in main __Flow options__. Default limit is `150` kB.

```html
// Sets the message size limit to 1 MB
package#flow      (Object)   : { limit: 1000 }
```

#### How can I extend existing Total.js application?

Download [__Flow.package__](https://raw.githubusercontent.com/totaljs/flow/master/flow.package) file from GitHub and copy it here:

```html
$ cp flow.package /yourapp/packages/flow.package
```

- restart app
- open `your.hostname.com/$flow/` URL address in your web browser

#### Can I trust to Flow pred-defined templates?

I think so. Only two peoples have access to GitHub __Flow Components__ repository: __Peter Širka__ and __Martin Smola__. We seriously check each change in the Flow components because we use Flow too.

Do you have any questions? [Contact us](https://www.totaljs.com/contact/).