jimaek,
I have this error as well, as it looks many others are having.
Maybe we can get to the bottom of this.
There is nothing in my PHP and nginx logs.
I’ve verified that my php.ini allows for 30 seconds of execution, and MySQL 16M of packet. I did increase MySQL to 32M of packet with no improvements.
The execution ends by roughly 5 seconds of execution.
Thanks for your continued help.