Fatal Error?

Not a techy person by any means, so please excuse my lack of knowledge. I have not uploaded any plugins or made any changes to my other settings or theme. I am have been trying to log in to the admin page of my site (consciouscurlies.com) but all I can get is the following error message:

Warning: require_once(/home4/consciou/public_html/wp-content/themes/customizr/inc/class-fire-widgets.php): failed to open stream: No such file or directory in /home4/consciou/public_html/wp-content/themes/customizr/inc/init.php on line 175

Fatal error: require_once(): Failed opening required ‘/home4/consciou/public_html/wp-content/themes/customizr/inc/class-fire-widgets.php’ (include_path=’.:/opt/php54/lib/php’) in /home4/consciou/public_html/wp-content/themes/customizr/inc/init.php on line 175

Can anyone give me some simple steps to fix the issue as soon as possible or how I can retrieve all of my data? I was able to log into wordpress.com and I see that some changes have been made to that site, however none of my site’s content is showing in the admin page. I have tried changing the theme to Twenty Fifteen, however the error message still shows Customizr as the current active theme. It is as if EVERYTHING has been completely wiped out from my theme, pages, posts, media, etc. I am afraid that I will not be able to retrieve it all.