How to fix «Session size of <…> exceeded allowed session max size of <…>» in Magento 2.3 ≥ 2.3.7 and Magento 2.4 ≥ 2.4.3?

dmitry_fedyuk · July 2, 2023, 7:49pm

magento/magento2/blob/2.3.7-p4/lib/internal/Magento/Framework/Session/SaveHandler.php#L121-L127


      
          $this->logger->warning(
              sprintf(
                  'Session size of %d exceeded allowed session max size of %d.',
                  $sessionSize,
                  $sessionMaxSize
              )
          );

dmitry_fedyuk · July 2, 2023, 7:50pm

The solution

for the backend
for the frontend