In magento 1.9.1 when I am trying to upgrade to 1.9.2 on live server, it is being failed. After failed attempt for upgrade, when I try to login on admin page, it is giving 500 internal server error. Even in var/log
folder also, I can't find recent logs.
How to resolve this issue? Can anyone guide me to solve the error?
Best Answer
Check if you have maintenance.flag file on your magento root, if that appears then please remove that file and set correct file or folder permission before you upgrade.