(In reply to comment #0)

When using the Wikimedia Commons Upload Wizard today I got the error
<api-error-stasherror> listed for each file when it came to adding the files
(the stage after adding descriptions).

Do you by any chance have the "chunked upload" preference enabled on commons?

info wrote:

In the Upload Wizard preferences "Chunked uploads for files over 1MB in Upload Wizard" is unchecked. So no, unless there is another chunked upload setting somewhere else.

(In reply to comment #1)

(In reply to comment #0)

When using the Wikimedia Commons Upload Wizard today I got the error
<api-error-stasherror> listed for each file when it came to adding the files
(the stage after adding descriptions).

Do you by any chance have the "chunked upload" preference enabled on commons?

I got the same error today and I have enabled the "chunked upload" preference.

But prior the above error I got the message "Bad token" for 1 of 5 files and after retrying to publish the missing 1 file I got the <api-error-stasherror> error.

I also experienced a similar issue yesterday when uploading this 132 Mb WebM video file with 'chunked upload' preferences enabled:

http://commons.wikimedia.org/wiki/File:Engagement_Roundtable_1_-_Part_2.webm

After my first attempt to upload that file, I got this message (see attached screenshots):

Internal error: Could not determine if the copy succeeded.

I refreshed my Contributions page, and there was no mention of this particular file upload, suggesting that this upload had not been successful.

I then clicked on 'Retry failed uploads', and got this second error message:

Unknown error: "stasherror"

I then clicked on 'Retry failed uploads' again, but that attempt was unsuccessful, even after a couple retries.

I then shut down my Mac Chrome 29 browser (which had 10 tabs open) and restarted the upload again from scratch, with fewer tabs. This time, the upload was successful, with no issues.

I should point out that I uploaded 9 other large video files yesterday with no issues either (and I kept adding more tabs throughout the day, which may rule out local browser memory allocation issues):
https://meta.wikimedia.org/wiki/Roundtables/Roundtable_1#Videos

All these uploads were done under the same conditions, both before and after the issue reported above. So this issue appears to be intermittent and difficult to reproduce.

Lastly, I should note that I experienced a similar issue last week, with this 453 Mb WebM video file:
https://meta.wikimedia.org/wiki/File:Multimedia_Roundtable_-_Part_1.webm

It gave me yet another error message ('An unknown error occurred'), but I was able to upload that file successfully, despite that message.

Created attachment 13396
Chunked-Upload-Wizard-Screenshot-Internal-Error-2013-09-26-2.17PM - See Comment 4 - first error message

Attached:

Created attachment 13397
Chunked-Upload-Wizard-Screenshot-Stash-Error-2013-09-26-2.20PM - See Comment 4, second error message

Attached:

Bryan Davis, is still in your plans to work on this? Now there are some nice scripts on Commons to make Special:UploadStash more usable, that could help you in debugging.

(In reply to comment #7)

Bryan Davis, is still in your plans to work on this? Now there are some nice
scripts on Commons to make Special:UploadStash more usable, that could help
you in debugging.

It's still on my list of "things to get to someday" but sadly I haven't looked at the problem of months. There is some hope however as the Multimedia team has been talking about a bug squash sprint for Upload Wizard.

Since the original reporter's files were way below 5MB and since I've seen the exact same bug experienced by a user who freshly created an account on one of our usertesting.com UX tests, I doubt that this one is caused by chunked uploads.

FYI I have two patches:

• https://gerrit.wikimedia.org/r/168649
• https://gerrit.wikimedia.org/r/168659

Together they should at least make it so errors from the stash API are legible and point to actual problems, instead of the illegible crap we've had thus far.