( ! ) Deprecated: Return type of PhpOffice\PhpSpreadsheet\Worksheet\Iterator::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/html/plugins/sendmail/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Iterator.php on line 69
Call Stack
#	Time	Memory	Function	Location
1	0.0014	530272	{main}( )	.../kogen_inventaris_backup.php:0
2	0.7896	19694768	PhpOffice\PhpSpreadsheet\Writer\Xlsx->save( $pFilename = 'files/kogen/Inventaris IKU & BKU - Sat-Jul-2026.xlsx' )	.../kogen_inventaris_backup.php:169
3	0.7896	19694768	PhpOffice\PhpSpreadsheet\Spreadsheet->garbageCollect( )	.../Xlsx.php:293
4	0.7896	19694984	PhpOffice\PhpSpreadsheet\Spreadsheet->getWorksheetIterator( )	.../Spreadsheet.php:1322
5	0.7897	19694984	Composer\Autoload\ClassLoader->loadClass( $class = 'PhpOffice\\PhpSpreadsheet\\Worksheet\\Iterator' )	.../Spreadsheet.php:1099
6	0.7897	19695144	Composer\Autoload\{closure:/var/www/html/plugins/sendmail/vendor/composer/ClassLoader.php:575-577}( $file = '/var/www/html/plugins/sendmail/vendor/composer/../phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Iterator.php' )	.../ClassLoader.php:427
7	0.7898	19695544	include( '/var/www/html/plugins/sendmail/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Iterator.php )	.../ClassLoader.php:576

( ! ) Deprecated: Return type of MyCLabs\Enum\Enum::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/html/plugins/sendmail/vendor/myclabs/php-enum/src/Enum.php on line 301
Call Stack
#	Time	Memory	Function	Location
1	0.0014	530272	{main}( )	.../kogen_inventaris_backup.php:0
2	0.7896	19694768	PhpOffice\PhpSpreadsheet\Writer\Xlsx->save( $pFilename = 'files/kogen/Inventaris IKU & BKU - Sat-Jul-2026.xlsx' )	.../kogen_inventaris_backup.php:169
3	1.6306	22272384	ZipStream\Option\Archive->__construct( )	.../Xlsx.php:506
4	1.6307	22272384	Composer\Autoload\ClassLoader->loadClass( $class = 'ZipStream\\Option\\Method' )	.../Archive.php:116
5	1.6307	22272512	Composer\Autoload\{closure:/var/www/html/plugins/sendmail/vendor/composer/ClassLoader.php:575-577}( $file = '/var/www/html/plugins/sendmail/vendor/composer/../maennchen/zipstream-php/src/Option/Method.php' )	.../ClassLoader.php:427
6	1.6307	22272920	include( '/var/www/html/plugins/sendmail/vendor/maennchen/zipstream-php/src/Option/Method.php )	.../ClassLoader.php:576
7	1.6307	22272920	Composer\Autoload\ClassLoader->loadClass( $class = 'MyCLabs\\Enum\\Enum' )	.../Method.php:15
8	1.6307	22273032	Composer\Autoload\{closure:/var/www/html/plugins/sendmail/vendor/composer/ClassLoader.php:575-577}( $file = '/var/www/html/plugins/sendmail/vendor/composer/../myclabs/php-enum/src/Enum.php' )	.../ClassLoader.php:427
9	1.6307	22273432	include( '/var/www/html/plugins/sendmail/vendor/myclabs/php-enum/src/Enum.php )	.../ClassLoader.php:576

Message could not be sent. Mailer Error: SMTP Error: Could not authenticate.