# ActiveStorage and Companion plug-ins?

**URL:** <https://community.transloadit.com/t/activestorage-and-companion-plug-ins/15208>\
**Category:** Uppy\
**Created:** [February 23, 2020, 2:37am UTC](https://community.transloadit.com/t/activestorage-and-companion-plug-ins/15208 "2020-02-23T02:37:17Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![martinstreicher](https://yyz2.discourse-cdn.com/flex032/user_avatar/community.transloadit.com/martinstreicher/32/214_2.png) [@martinstreicher](https://community.transloadit.com/u/martinstreicher)\
**Post date:** [February 23, 2020, 2:37am UTC](https://community.transloadit.com/t/activestorage-and-companion-plug-ins/15208/1 "2020-02-23T02:37:17Z")

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I am new to Uppy. I have a Rails 6 app with Active Storage. I am running Companion as a standalone Heroku Node.js app.

Uppy uploads files fine from my local machine, but I get the following error when I try to upload files via Dropbox. (I can select files just fine from Dropbox. The error occurs when transfer starts.)

```
[Error] [Uppy] [21:22:01] – "undefined is not an object (evaluating 'file.response.signed_id') "

```

The error is coming from index.js and function upload.

I’ll post my code as a gist. I am at a loss – it seems like the response is going amiss.

> <https://gist.github.com/martinstreicher/203595c19c044433fa36ee1930dbf787>

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