How to check the logs

To check PHP logs

Connect to terminal
run command "sudo cat /var/log/php-fpm/www-error.log" to see the whole file OR
run command "sudo tail -100 /var/log/php-fpm/www-error.log" to see just the last 100 entries

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To check Apache logs

Connect to terminal
To check error log run command "sudo cat /home/ec2-user/error.log"
To check access log run command "sudo cat /home/ec2-user/access.log"
There depending on how to logs are setup there could be more apache logs for the different domains e.g ops is setup to log into ops\error.log and ops\access.log