Footer goes empty

Hello,
im using WordPress 3.0.4 with custom theme. today when i try to edit footer.php from WordPress admin panel (https://www.dhakapost24.com/wp-admin/theme-editor.php?file=/themes/newswire/footer.php&theme=News&dir=theme) it shows file update successfully but my footer goes empty (nothing shows on my website footer )
when i check via ftp (/wp-content/themes/newswire/footer.php) its shows 0 byte. when i try by uploading footer.php footer.php.BAK and footer.php.BAK.BAK those file also shows 0 byte. Please help me, how can i fix it. My css and function.php file codes mentioning below

CSS: https://pastebin.com/G31eZdVA

and function.php https://pastebin.com/fh8q5F2Z

Please help me website address https://www.dhakapost24.com