Panic!! Help

Hi there,
I am completely new to WordPress and have been using it in the last few weeks. Until my site is ready, I have been using ServerPress as a desktop server to build my website before it goes live.

Anyway, I was working on my website (Woo Theme Canvas) when it came up with this message:

Fatal error: Cannot redeclare woo_custom_add_searchform() (previously declared in folders\themes\canvas\functions.php:98) in folders\wp-content\themes\canvas\functions.php on line 114

I have no idea what this means! I cannot get into my site, or to the WordPress admin page and I am really starting to panic that I will have to start over again.

If anyone has any advice or help, I would be very grateful, but please go slow, because I am new to all of this.

Thank you so much!