What could be the cause of this 'Illegal offset type' error for file uploads?

[Ifriqiya]

I have this setup to upload user-generated files to backblaze using AWS s3 compatible filesystems. It worked until recently and I can't figure out why it no longer does.

I use this trait class from the Laravel source code for photo uploads:

<?php

namespace App\Traits;

use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\Storage;
use Laravel\Jetstream\Features;

trait HasProfilePhoto
{
    /**
     * Update the user's profile photo.
     *
     * @return void
     */
    public function updateProfilePhoto(UploadedFile $photo)
    {
        tap($this->profile_photo_path, function ($previous) use ($photo) {
            $this->forceFill([
                'profile_photo_path' => $photo->storePublicly(
                    'profile-photos', ['disk' => $this->profilePhotoDisk()]
                ),
            ])->save();

            Storage::disk($this->profilePhotoDisk())->put('profile-photos', $photo);

            if ($previous) {
                Storage::disk($this->profilePhotoDisk())->delete($previous);
            }
        });
    }

    /**
     * Delete the user's profile photo.
     *
     * @return void
     */
    public function deleteProfilePhoto()
    {
        if (! Features::managesProfilePhotos()) {
            return;
        }

        if (is_null($this->profile_photo_path)) {
            return;
        }
        // confirm if this also deletes on Backblaze-it should
        Storage::disk($this->profilePhotoDisk())->delete($this->profile_photo_path);

        $this->forceFill([
            'profile_photo_path' => null,
        ])->save();
    }

    /**
     * Get the URL to the user's profile photo.
     *
     * @return string
     */
    public function getProfilePhotoUrlAttribute()
    {
        if (config('app.env') == 'local') {
            return $this->profile_photo_path
            ? Storage::disk($this->profilePhotoDisk())->url($this->profile_photo_path)
            : $this->defaultProfilePhotoUrl();
        } else {
            return $this->profile_photo_path
            ? $this->s3ProfilePhotoUrl()
            : $this->defaultProfilePhotoUrl();
        }

    }

    /**
     * Get the default profile photo URL if no profile photo has been uploaded.
     *
     * @return string
     */
    protected function defaultProfilePhotoUrl()
    {
        $fullname = $this->first_name.' '.$this->last_name;
        $name = trim(collect(explode(' ', $fullname))->map(function ($segment) {
            return mb_substr($segment, 0, 1);
        })->join(' '));

        return 'https://ui-avatars.com/api/?name='.urlencode($name).'&color=7F9CF5&background=EBF4FF';
    }

    /**
     * Get the s3 profile photo URL for uploaded profile photos.
     *
     * @return string
     */
    protected function s3ProfilePhotoUrl()
    {
        return 'https://smartwealth.s3.us-west-004.backblazeb2.com/'.$this->profile_photo_path;
    }

    /**
     * Get the disk that profile photos should be stored on.
     *
     * @return string
     */
    protected function profilePhotoDisk()
    {
        if (config('app.env') == 'local') {
            return isset($_ENV['VAPOR_ARTIFACT_NAME']) ? 's3' : config('jetstream.profile_photo_disk', 'public');
        } else {
            return config('filesystems.disks.s3', 's3');
        }
    }
}

I set my FILESYSTEM_DRIVER to s3 and set the AWS keys in my .env file using my details on Backblaze.

When I upload a photo, I get the 'Illegal offset type' error that points to the framework filesystems.

What can I do to resolve this?

[Angel5a]

It can be that your env is not local and you are trying to fetch a whole s3 config array in place where only a string needed.

    protected function profilePhotoDisk()
    {
        if (config('app.env') == 'local') {
            return isset($_ENV['VAPOR_ARTIFACT_NAME']) ? 's3' : config('jetstream.profile_photo_disk', 'public');
        } else {
            return config('filesystems.disks.s3', 's3');
        }
    }

Revert all the changes to HasProfilePhoto you made, and change the 'profile_photo_disk' option in the config/jetstream.php (you can introduce ENV if you wish, a write same logic over env checking).

[Ifriqiya]

Yes, you're correct. Making this change return config('filesystems.disks.s3.driver', 's3'); resolved the issue.