# Maybe bug in \`companionUrl\` for AwsS3Multipart

**URL:** <https://community.transloadit.com/t/maybe-bug-in-companionurl-for-awss3multipart/16464>\
**Category:** Uppy\
**Created:** [February 8, 2023, 1:50pm UTC](https://community.transloadit.com/t/maybe-bug-in-companionurl-for-awss3multipart/16464 "2023-02-08T13:50:56Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![endymion1818](https://yyz2.discourse-cdn.com/flex032/user_avatar/community.transloadit.com/endymion1818/32/775_2.png) [@endymion1818](https://community.transloadit.com/u/endymion1818)\
**Post date:** [February 8, 2023, 1:50pm UTC](https://community.transloadit.com/t/maybe-bug-in-companionurl-for-awss3multipart/16464/1 "2023-02-08T13:50:56Z")

</div>

Hi,

I have a custom companion, say the URL is `https://my.companion.url`. When I pass tht into Uppy, [as per the docs](https://uppy.io/docs/aws-s3-multipart/), I’m getting a 404 error on attempting an upload.

Code:

```auto
  const uppy = new Uppy({ logger: debugLogger, options })
    .use(AwsS3Multipart, {
      companionUrl: "https://my.companion.url",
    })

```

Result:

```auto
POST http://localhost:5173/%22https://my.companion.url%22;/s3/multipart 404 (Not Found)
fetchWithNetworkError @ fetchWithNetworkError.js:7
_request2 @ RequestClient.js:251
await in _request2 (async)
post @ RequestClient.js:206
createMultipartUpload @ index.js:559
(anonymous) @ RateLimitedQueue.js:161
_call2 @ RateLimitedQueue.js:258
run @ RateLimitedQueue.js:140
(anonymous) @ RateLimitedQueue.js:156
(anonymous) @ RateLimitedQueue.js:155
getUploadId @ index.js:162
uploadFile @ index.js:203
_createUpload2 @ MultipartUploader.js:230
start @ MultipartUploader.js:168
(anonymous) @ index.js:823
uploadFile @ index.js:725
(anonymous) @ index.js:967
upload @ index.js:960
_runUpload2 @ Uppy.js:1704
await in _runUpload2 (async)
(anonymous) @ Uppy.js:1285
Promise.then (async)
upload @ Uppy.js:1268
StatusBar2.startUpload @ StatusBar.js:93
g @ props.js:154

```

Am I doing something wrong? Or is this a bug?

EDIT: I just tried with the AwsS3 destination and got the same error.

---

<div class="post-metadata">

**Author:** ![mifi](https://yyz2.discourse-cdn.com/flex032/user_avatar/community.transloadit.com/mifi/32/603_2.png) [@mifi](https://community.transloadit.com/u/mifi)\
**Post date:** [February 8, 2023, 2:21pm UTC](https://community.transloadit.com/t/maybe-bug-in-companionurl-for-awss3multipart/16464/2 "2023-02-08T14:21:44Z")

</div>

hi

hard to say without seeing more code, but I assume that my.companion.url is not the real URL.  
I can see from your error that `https://my.companion.url%22;/s3/multipart` looks like an invalid URL - not sure what’s happening there with `%22;`. %22 is `"` so it’s "; - looks like some javascript snuck in there somehow

---

<div class="post-metadata">

**Author:** ![endymion1818](https://yyz2.discourse-cdn.com/flex032/user_avatar/community.transloadit.com/endymion1818/32/775_2.png) [@endymion1818](https://community.transloadit.com/u/endymion1818)\
**Post date:** [February 8, 2023, 2:35pm UTC](https://community.transloadit.com/t/maybe-bug-in-companionurl-for-awss3multipart/16464/3 "2023-02-08T14:35:36Z")

</div>

Yes I literally just found a stray `;` after the variable in my `env` file. I knew semicolons were made optional for a reason …