Word press 4.4 update problem

I have updated my sites to 4.4 from 4.3 after updating i am getting this error on opening any post.

PHP Warning: file_exists(): File name is longer than the maximum allowed path length on this platform (260): D:\INETPUB\VHOSTS\fbdnews.com\httpdocs/wp-content/themes/EachWeek/single-post-%e0%a4%a6%e0%a5%87%e0%a4%96%e0%a4%bf%e0%a4%af%e0%a5%87-%e0%a4%ac%e0%a5%8d%e0%a4%b2%e0%a4%be%e0%a4%95-%e0%a4%a8%e0%a4%b5%e0%a4%be%e0%a4%ac%e0%a4%97%e0%a4%82%e0%a4%9c-%e0%a4%95%e0%a5%87-%e0%a4%9a.php in D:\INETPUB\VHOSTS\fbdnews.com\httpdocs\wp-includes\template.php on line 511

PHP Warning: file_exists(): File name is longer than the maximum allowed path length on this platform (260): D:\INETPUB\VHOSTS\fbdnews.com\httpdocs/wp-content/themes/EachWeek/single-post-%e0%a4%a6%e0%a5%87%e0%a4%96%e0%a4%bf%e0%a4%af%e0%a5%87-%e0%a4%ac%e0%a5%8d%e0%a4%b2%e0%a4%be%e0%a4%95-%e0%a4%a8%e0%a4%b5%e0%a4%be%e0%a4%ac%e0%a4%97%e0%a4%82%e0%a4%9c-%e0%a4%95%e0%a5%87-%e0%a4%9a.php in D:\INETPUB\VHOSTS\fbdnews.com\httpdocs\wp-includes\template.php on line 514

what to now i have no idea
any one have any idea what to do plz help

my sites are
https://www.fbdnews.com
https://www.cnilivenews.com
https://liveupnewschannel.com/