Fatal Error in Jetpack – How to Resolve?

Hi Everyone!

I got this error and I barely have programming knowledge. I can access the homepage of my blog, however, if I click any article and even the admin panel, this error shows up, always:

Warning: require_once(/home/ocalundan/public_html/blog/wp-content/plugins/jetpack/class.jetpack-data.php): failed to open stream: No such file or directory in /home/ocalundan/public_html/blog/wp-content/plugins/jetpack/jetpack.php on line 33

Fatal error: require_once(): Failed opening required ‘/home/ocalundan/public_html/blog/wp-content/plugins/jetpack/class.jetpack-data.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/ocalundan/public_html/blog/wp-content/plugins/jetpack/jetpack.php on line 33

How can I possibly fix this? This ruins everything I have in my blog as it becomes inaccessible.

By the way, here’s the LINK to my blog.

Thanks in advance!