Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\RichText\ITextElement" not found in E:\www\xmvc\v5.0\composer\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\RichText\TextElement.php:7 Stack trace: #0 {main} thrown in E:\www\xmvc\v5.0\composer\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\RichText\TextElement.php on line 7