Fatal error: Uncaught Error: Interface "League\Csv\ByteSequence" not found in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\league\csv\src\AbstractCsv.php:43 Stack trace: #0 {main} thrown in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\league\csv\src\AbstractCsv.php on line 43