I am using Laravel's Filesystem to store items on s3 and I am getting the wrong URL.
Storage::disk('s3')->put('file.txt', 'Contents');
Gives me the error
CurlException in CurlMulti.php line 359:
[curl] 6: Could not resolve host: mybucket.s3.website-us-east-1.amazonaws.com [url] https://mybucket.s3.website-us-east-1.amazonaws.com/file.txt
This URL
mybucket.s3.website-us-east-1.amazonaws.com
should be
mybucket.s3-website-us-east-1.amazonaws.com
config/filesystem.php
's3' => [
    'driver' => 's3',
    'key'    => env('S3_KEY'),
    'secret' => env('S3_SECRET'),
    'region' => env('S3_REGION'),
    'bucket' => env('S3_BUCKET'),
],
.env
S3_KEY=MYKEY
S3_SECRET=mySecr3tmySecr3tmySecr3tmySecr3t
S3_REGION=website-us-east-1
S3_BUCKET=mybucket
                I eventually found two answers for this.
One solution was to remove the region reference entirely
's3' => [
    'driver' => 's3',
    'key'    => env('S3_KEY'),
    'secret' => env('S3_SECRET'),
    'bucket' => env('S3_BUCKET'),
],
The other solution which is what I eventually went with was this:
's3' => [
    'driver' => 's3',
    'key'    => env('AWS_KEY'),
    'secret' => env('AWS_SECRET_KEY'),
    'region' => Aws\Common\Enum\Region::OREGON,
    'bucket' => 'app-images',
],
the regions can be found on the S3 GitHub Repo.
class Region extends Enum
{
    const US_EAST_1           = 'us-east-1';
    const VIRGINIA            = 'us-east-1';
    const NORTHERN_VIRGINIA   = 'us-east-1';
    const US_WEST_1           = 'us-west-1';
    const CALIFORNIA          = 'us-west-1';
    const NORTHERN_CALIFORNIA = 'us-west-1';
    const US_WEST_2           = 'us-west-2';
    const OREGON              = 'us-west-2';
    const EU_WEST_1           = 'eu-west-1';
    const IRELAND             = 'eu-west-1';
    const LONDON              = 'eu-west-2';
    const EU_CENTRAL_1        = 'eu-central-1';
    const FRANKFURT           = 'eu-central-1';
    const AP_SOUTHEAST_1      = 'ap-southeast-1';
    const SINGAPORE           = 'ap-southeast-1';
    const AP_SOUTHEAST_2      = 'ap-southeast-2';
    const SYDNEY              = 'ap-southeast-2';
    const AP_NORTHEAST_1      = 'ap-northeast-1';
    const TOKYO               = 'ap-northeast-1';
    const SA_EAST_1           = 'sa-east-1';
    const SAO_PAULO           = 'sa-east-1';
    const CN_NORTH_1          = 'cn-north-1';
    const BEIJING             = 'cn-north-1';
    const US_GOV_WEST_1       = 'us-gov-west-1';
    const GOV_CLOUD_US        = 'us-gov-west-1';
}
Now my original approach works again. I forget when it started working, but there you go.
filesystems.php
's3' => [
    'driver' => 's3',
    'key'    => env('S3_KEY'),
    'secret' => env('S3_SECRET'),
    'region' => env('S3_REGION'),
    'bucket' => env('S3_BUCKET'),
],
.env
S3_REGION=us-east-1
It looks like they removed the Region.php file. Today, June 2020, the S3Client.php file is the only reference to regions I can find in their repo.
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