Ok. Glad its' working
I don't understand what you did, can you explain to me?
I was just commenting two lines in helper.php (DST support part) and uploaded it to your website. The error is kind of related to basic php function support but I'm unable replicate the problem at my end. I was suspecting that is related to a server setting, but then you said the other website(that is working normally) is hosted in the same server then it's probably because of something else.