«Cannot modify header information - headers already sent by (output started at vendor/magento/module-downloadable/Helper/Download.php:285) in vendor/magento/framework/Stdlib/Cookie/PhpCookieManager.php on line 148»

[dmitrii-fediuk]

"url":"/iridium-go_-fixed-installation-kit-fact-sheet-pdf"

#1 setcookie() called at [vendor/magento/framework/Stdlib/Cookie/PhpCookieManager.php:148]
#2 Magento\Framework\Stdlib\Cookie\PhpCookieManager->setCookie() called at [vendor/magento/framework/Stdlib/Cookie/PhpCookieManager.php:101]
#3 Magento\Framework\Stdlib\Cookie\PhpCookieManager->setSensitiveCookie() called at [vendor/magento/framework/App/Response/Http.php:114]
#4 Magento\Framework\App\Response\Http->sendVary() called at [generated/code/Magento/Framework/App/Response/Http/Interceptor.php:37]
#5 Magento\Framework\App\Response\Http\Interceptor->sendVary() called at [vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php:25]
#6 Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse() called at [vendor/magento/framework/Interception/Interceptor.php:121]
#7 Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#8 Magento\Framework\App\Response\Http\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/Response/Http/Interceptor.php:117]
#9 Magento\Framework\App\Response\Http\Interceptor->sendResponse() called at [vendor/magento/framework/App/Bootstrap.php:262]
#10 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:40]

[dmitrii-fediuk]

I am unable to reproduce it with the https://www.canadasatellite.ca/iridium-go_-fixed-installation-kit-fact-sheet-pdf URL.

[dmitrii-fediuk]

I see it again in logs:

{
    "channel": "main",
    "context": {
        "exception": {},
        "report_id": "f91dbdc1068b9a30889dabc7aff13614627e45bcce85fb1aadddfbfab7ddb1b2"
    },
    "datetime": {
        "date": "2021-04-02 17:03:57.144819",
        "timezone_type": 3,
        "timezone": "UTC"
    },
    "level": 500,
    "level_name": "CRITICAL",
    "Mage2.PRO": [
        {
            "mage2pro/core": "7.2.9",
            "Magento": "2.3.5-p2",
            "PHP": "7.2.34-8+ubuntu16.04.1+deb.sury.org+1",
            "Referer": "https://www.canadasatellite.ca/Dish-Network-Dish-Pro-Plus-Twin-LNBF-DPP-Twin-LNB-p/dish-pro-plus-twin-lnb.htm",
            "URL": "https://www.canadasatellite.ca/dish-pro-plus-dpp-twin-lnb-installation-guide-pdf"
        }
    ],
    "message": "Warning: Cannot modify header information - headers already sent by (output started at vendor/magento/module-downloadable/Helper/Download.php:285) in vendor/magento/framework/Stdlib/Cookie/PhpCookieManager.php on line 148"
}
Location:    vendor/mage2pro/core/Framework/Logger/Handler.php:55
Callee:      df_log_l
*****************1******************
Location:    vendor/monolog/monolog/src/Monolog/Logger.php:344
Callee:      Df\Framework\Logger\Handler::handle
*****************2******************
Location:    vendor/magento/framework/Logger/Monolog.php:48
Callee:      Monolog\Logger::addRecord
*****************3******************
Location:    vendor/monolog/monolog/src/Monolog/Logger.php:740
Callee:      Magento\Framework\Logger\Monolog::addRecord
*****************4******************
Location:    vendor/magento/framework/App/ExceptionHandler.php:251
Callee:      Monolog\Logger::critical
*****************5******************
Location:    vendor/magento/framework/App/ExceptionHandler.php:74
Callee:      Magento\Framework\App\ExceptionHandler::handleGenericReport
*****************6******************
Location:    vendor/magento/framework/App/Http.php:156
Callee:      Magento\Framework\App\ExceptionHandler::handle
*****************7******************
Location:    vendor/magento/framework/App/Bootstrap.php:267
Callee:      Magento\Framework\App\Http::catchException
*****************8******************
Location:    pub/index.php:40
Callee:      Magento\Framework\App\Bootstrap::run