Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, bool given in /home/miya10240/lets-csharp.com/public_html/sample/spreadsheet-to-spreadsheet/index.php:66 Stack trace: #0 /home/miya10240/lets-csharp.com/public_html/sample/spreadsheet-to-spreadsheet/index.php(10): getDataFromPage(Array) #1 {main} thrown in /home/miya10240/lets-csharp.com/public_html/sample/spreadsheet-to-spreadsheet/index.php on line 66