problems with the start of session

I worked all night on a blog and then install east plug in that protected the code font but a few hours longer had access to the page I and the address / wp-admin not working the screen went blank, so As I began to modify and change the file had kleo / function.php delete everything and place next to the download folder of the theme, but now I get this error Warning: implode (): Invalid arguments passed in / home / nitrow5 /public_html/wp-content/themes/kleo/functions.php on line 289 and the pop of the option to log does not show me the button login with facebook and when I log into my account redirects me to the homepage but the selectional the desktop option asks me to enter the password again and have to login to view the dashboard