I got the following error message before upgrading:
Your server has wrong PHP script timeout settings. This could be due to restrictions on the PHP set_time_limit function or FastCGI "Timeout" options. We recommend you contact your hosting provider in order to resolve this issue or contact our tech support team to perform the upgrade for you.
In this case I do have
max_execution_time = 7000
in the config.local.php is also @set_time_limit(7000);
max_input_time = 7000 so is much more that 600 seconds and stills shows that error mentioned by @ amjadhiary
There are other parameters needed to be setup?