AWS SDK stopped working after composer update

Question

After I run composer update on AWS PHP SDK I started to get this error:

Fatal error: Interface 'Guzzle\Common\HasDispatcherInterface' not found in <path>

There is HasDispatcherInterface.php file in <path>, but I still get the error. Is this a bug? If it is, is there any workaround?

Answer 1

So it turned out this is about a 12 year old bug of PHP. https://bugs.php.net/bug.php?id=18556

When you use setlocale('tr_TR'), PHP can not find any class or method has an 'I' letter in its name. Even if its a standart library. Great.