Using aws-s3-v3 with laravel and digitalocean spaces results in error 501 not implemented

I am trying to upload some files to a s3 compatible storage from digitalocean (spaces) using Laravel 8 and flysystem-aws-s3-v3.

But when I submit those files I'm getting this error:

Aws\S3\Exception\S3Exception
Error executing "PutObject" on "//SPACES_NAME.nyc3.digitaloceanspaces.com/SPACES_NAME.nyc3.digitaloceanspaces.com"; AWS HTTP error: Server error: `PUT http://SPACES_NAME.nyc3.digitaloceanspaces.com/SPACES_NAME.nyc3.digitaloceanspaces.com` resulted in a `501 Not Implemented` response: <?xml version="1.0" encoding="UTF-8"?><Error><Code>NotImplemented</Code><RequestId>tx00000000000000bf40fd9-00605636a9-96 (truncated...) NotImplemented (server): - <?xml version="1.0" encoding="UTF-8"?><Error><Code>NotImplemented</Code><RequestId>tx00000000000000bf40fd9-0060

5636a9-9617be5-nyc3c9617be5-nyc3c-nyc3-zg03

Here are my digitalocean constants from .env:

DO_SPACES_ACCESS_KEY=[edit]
DO_SPACES_SECRET_ACCESS_KEY=[edit]
DO_SPACES_ENDPOINT=nyc3.digitaloceanspaces.com
DO_SPACES_REGION=nyc3
DO_SPACES_BUCKET=SPACES_NAME
DO_URL=https://SPACES_NAME.nyc3.cdn.digitaloceanspaces.com  

And here is the config part from config/filesystem.php:

'disks' => [
    ...
    'do' => [
        'driver'    => 's3',
        'key'       => env('DO_SPACES_ACCESS_KEY'),
        'secret'    => env('DO_SPACES_SECRET_ACCESS_KEY'),
        'region'    => env('DO_SPACES_REGION'),
        'bucket'    => env('DO_SPACES_BUCKET'),
        'endpoint'  => env('DO_SPACES_ENDPOINT'),
        'url'   => env('DO_URL'),
    ],
],

And this is the test method that I'm using to process uploads:

Route::post('upload', function(){
        $extension = request()->file('file')->extension();
        $path = Storage::disk('do')->putFileAs('upload', request()->file('file'), time() . '.' .$extension, 'public');
});

Any thoughts on how this 501 not implemented error could be fixed? I see that the url for some reason appears twice and I think that that has something to do with it :-?

I solved the same problem as follows:

1. Add the following endpoint to the .env file

    DO_SPACES_ENDPOINT=https://SPACES_NAME.nyc3.digitaloceanspaces.com

2. Add an option in the config/filesystem.php file to your DO Space.

    'bucket_endpoint' => true

3. Clear the cache.