Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Shared\Trend\BestFit' not found in D:\workspaces\liZiPingBack\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Shared\Trend\LinearBestFit.php:5 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Shared\Trend\LinearBestFit.php on line 5