function.php help with mistake i made

Hey Guys,

I need some help around changing my functions file in that I had made a mistake somewhere with this file and I am unsure of where or what I have done now. Everything I try to leave the page all I see is this:

Parse error: syntax error, unexpected ‘.’ in /home/content/p3pnexwpnas15_data03/99/3704199/html/wp-content/themes/storefront/functions.php on line 50

So now I am effectively stuck on a page I cant fix. I’d appreciate any help right now, owuld anyone know the original or what I should do?