I am trying to upgrade from 7.5.3 to 7.6.3 yet I am getting a gateway timeout during system check. So I can not complete the upgrade check due to the gateway timeout (The gateway did not receive a timely response from the upstream server or application.)
according to my log file I am receiving a MySQL server has gone away error
I am doing this on a newly created dev site so not to cause any problems.
I have doubled checked all the prerequisites for upgrade and Max file PHP settings and all check out.
Do you have any thoughts?