S3 Storage FatalErrorException in SignatureV4.php

I'm trying to upload images to AWS S3 using the Laravel Filesystem, but keeps getting this error:

FatalErrorException in SignatureV4.php Maximum function nesting level of '100' reached, aborting!

I have setup my AWS credentials and followed the documentation.

Event tested with this line of code

$s3 = Storage::disk('s3');
$s3->put('test.txt', 'this is a test');

Same result.

Any suggestions?