Parse error: syntax error

hi, i had buyed spa lab theme and it work fine but since 1h our i’ve now an arror and can’t acces to my website :

Parse error: syntax error, unexpected end of file in /htdocs/wp-content/themes/spalab/header.php on line 1

I don’t understand the probleme, am not developper i can’t resolv it alone.
If someone can help me, it will be really appreciate.

thanks a lot.