I have a codeigniter project under development that is working fine on most of the systems. But one of my client is getting a blank white page on one of his laptop. I turned on codeigniter logging. I asked the client to login from his side, then I examined the log and there is no fatal error in the logs. There are some php warnings and notices, beside those the log is not indicating anything unusual. How can I find the cause of this issue? I also looked into apache error logs and nothing seems to be wrong.