( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetPr(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 146

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetPr(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 146

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeDimension(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 193

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeDimension(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 193

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetViews(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 208

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetViews(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 208

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetFormatPr(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 315

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetFormatPr(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 315

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeCols(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 367

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeCols(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 367

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetProtection(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 432

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetProtection(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 432

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeConditionalFormatting(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 467

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeConditionalFormatting(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 467

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeDataValidations(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 542

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeDataValidations(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 542

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeHyperlinks(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 608

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeHyperlinks(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 608

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeProtectedRanges(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 649

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeProtectedRanges(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 649

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeMergeCells(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 678

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeMergeCells(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 678

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writePrintOptions(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 703

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writePrintOptions(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 703

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writePageMargins(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 729

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writePageMargins(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 729

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeAutoFilter(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 749

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeAutoFilter(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 749

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writePageSetup(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 841

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writePageSetup(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 841

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeHeaderFooter(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 876

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeHeaderFooter(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 876

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeBreaks(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 901

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeBreaks(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 901

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetData(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 959

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeSheetData(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 959

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeCell(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1056

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeCell(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1056

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeDrawings(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1175

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeDrawings(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1175

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeLegacyDrawing(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1194

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeLegacyDrawing(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1194

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeLegacyDrawingHF(): Implicitly marking parameter $objWriter as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1211

( ! ) Deprecated: PHPExcel_Writer_Excel2007_Worksheet::_writeLegacyDrawingHF(): Implicitly marking parameter $pSheet as nullable is deprecated, the explicit nullable type must be used instead in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 1211

( ! ) Fatal error: Uncaught Error: Class "PHPExcel_Writer_Excel2007_WriterPart" not found in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 36
( ! ) Error: Class "PHPExcel_Writer_Excel2007_WriterPart" not found in C:\wamp64\www\crop_db\libs\phpoffice\PHPExcel\Writer\Excel2007\Worksheet.php on line 36
Call Stack
#	Time	Memory	Function	Location
1	0.0624	405712	{main}( )	...\Worksheet.php:0