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I'm facing those issues after data migration from Magento 1.9.4 to Magento 2.3 :

  • configurable products are causing 503 server error on front-end.
  • categories with configurable products are causing 503 server error.
  • searching for a configurable product is causing 503 server error.

  • PHP LOGS

    [21-Mar-2019 03:16:01] WARNING: [pool example.com] child 57516 exited on signal 11 (SIGSEGV) after 1.659686 seconds from start
    [21-Mar-2019 03:16:01] NOTICE: [pool example.com] child 57576 started
    
  • DOMAIN LOGS:

    AH01067: Failed to read FastCGI header, referer: https://example.com/ (104)Connection reset by peer: AH01075: Error dispatching request to: , referer: https://example.com/

  • Magento 2.3 fresh install and default theme

  • The products have unique URL's
  • I managed to have them all working by opening and saving one single random product. Reindexing will make them crash again.

• Magento LOGS :

main.ERROR: Warning: SessionHandler::read(): open(/var/lib/php/sessions/sess_ub6spo4jcfmsh0itec4jahoik8, O_RDWR) failed: Permission denied (13) in /var/www/vhosts/example.com/httpdocs/vendor/magento/framework/Session/SaveHandler/Native.php on line 22


main.INFO: Consumer "async.operations.all" skipped as required connection "amqp" is not configured. Unknown connection name amqp

Environment : Ubuntu 18.04.2 LTS‬ Plesk Onyx - Version 17.8.11 Update #45 PHP 7.2.16 - FPM Application Served by Apache Nginx : Proxy mode + Smart static files processing

PHP Settings : max_input_vars = 10000 max_input_nesting_level = 800 precision = 14 output_buffering = 44096 memory_limit : 10GO max_execution_time : 180000 max_input_time : 180000

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