[Bug]: Image upload Problems - [SyntaxError: Unexpected token 'R', "Request er"... is not valid JSON]

[SuperContraptionGuy]

Requirements

• Is this a bug report? For questions or discussions use https://lemmy.ml/c/lemmy_support
• Did you check to see if this issue already exists?
• Is this only a single bug? Do not put multiple bugs in one issue.
• Is this a server side (not related to the UI) issue? Use the Lemmy back end repo.

Summary

Unable to upload images, as community icon, banner, or to attach to a post. When attaching an image to a new post, a red box appears a few seconds later with the error message:

SyntaxError: Unexpected token 'R', "Request er"... is not valid JSON

images of errors:
https://imgur.com/a/SG8Zh4D

Using Brave web browser.

Steps to Reproduce

1. Press 'Create Post'
2. Press the upload image icon.
3. Choose an image and start the upload

Technical Details

Version

BE: 0.17.4

Lemmy Instance URL

https://lemmy.fmhy.ml/

[alectrocute]

Possibly related to #1532.

[MichaelCharles]

I'm having the same issue.

[MichaelCharles]

When looking at the docker-compose log, this is what I see

lemmy-pictrs-1    | Error:
lemmy-pictrs-1    |    0: IO error: Permission denied (os error 13)
lemmy-pictrs-1    |
lemmy-pictrs-1    | Location:
lemmy-pictrs-1    |    src/repo.rs:447
lemmy-pictrs-1    |
lemmy-pictrs-1    |   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
lemmy-pictrs-1    |   <empty backtrace>
lemmy-pictrs-1    |
lemmy-pictrs-1    | Run with COLORBT_SHOW_HIDDEN=1 environment variable to disable frame filtering.
lemmy-pictrs-1 exited with code 1

[MichaelCharles]

In my case, I was able to resolve this by changing the user value under pictrs in my docker-compose.yml file from user: 991:991 to user: app:app.

[dcx]

I'm experiencing this issue in 0.18.1, and it was working fine in 0.17.4.

Here's a bunch of my users confirming they have this issue.

I was getting the above error yesterday, but today it has started telling me "Picture deleted: <mypicture.png>"

(Edit: After a restart and possibly the 0.18.2 update, this has become clearer: we now see an error which says images were being rejected because they were >1mb)