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Warning: count(): Parameter must be an array or an object that implements Countable in /www/htdocs/w011e138/wp-content/plugins/read-offline/inc/class-read-offline-create.php on line 145

Fatal error: Uncaught PHPZip\Zip\Exception\HeadersSent: Unable to send 'sachtexte.epub'. Headers have already been sent from '/www/htdocs/w011e138/wp-content/plugins/read-offline/inc/class-read-offline-create.php' in line 144 in /www/htdocs/w011e138/wp-content/plugins/read-offline/vendor/phpzip/phpzip/src/Zip/Core/AbstractZipArchive.php:743 Stack trace: #0 /www/htdocs/w011e138/wp-content/plugins/read-offline/vendor/phpzip/phpzip/src/Zip/File/Zip.php(143): PHPZip\Zip\Core\AbstractZipArchive->buildResponseHeader('sachtexte.epub', 'application/epu...', NULL, false) #1 /www/htdocs/w011e138/wp-content/plugins/read-offline/vendor/grandt/phpepub/src/PHPePub/Core/EPub.php(2276): PHPZip\Zip\File\Zip->sendZip('sachtexte.epub', 'application/epu...') #2 /www/htdocs/w011e138/wp-content/plugins/read-offline/inc/class-read-offline-create.php(231): PHPePub\Core\EPub->sendBook('sachtexte.epub') #3 /www/htdocs/w011e138/wp-content/plugins/read-offline/inc/class-read-offline-parser.php(97): Read_Offline_Create->epub(Object(WP_Post)) #4 /www/ in /www/htdocs/w011e138/wp-content/plugins/read-offline/vendor/phpzip/phpzip/src/Zip/Core/AbstractZipArchive.php on line 743