Problems with the HTML5 Uploader - JSON.parse: unexpected character at line 1 column 1 of the JSON data
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- Dominant language
- JavaScript
- Stars
- 151
- Forks
- 222
- PR merge metrics
- No merged PRs in 30d
Description
There is currently a problem with the HTML5 uploader. As soon as an image is uploaded, an error occurs.
This happens in the Chrome Browser from 67 and in Firefox from 60
See Screenshots.

On Chromium 65 works fine...
How can I solve the problem?
Thanks!
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the HTML5 uploader and reproduce the upload in Chrome 67 or later and Firefox 60 or later, comparing the behavior with Chromium 65. The issue names no source file or test, so trace the upload response to the JSON.parse failure. Done means an image upload completes without the reported parsing error in the affected browsers.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100