( ! ) Deprecated: PHPExcel_Writer_OpenDocument_Mimetype::write(): Implicitly marking parameter $pPHPExcel as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\OpenDocument\Mimetype.php on line 46

( ! ) Fatal error: Uncaught Error: Class "PHPExcel_Writer_OpenDocument_WriterPart" not found in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\OpenDocument\Mimetype.php on line 37
( ! ) Error: Class "PHPExcel_Writer_OpenDocument_WriterPart" not found in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\OpenDocument\Mimetype.php on line 37
Call Stack
#	Time	Memory	Function	Location
1	0.0405	362064	{main}( )	...\Mimetype.php:0