[27-Nov-2016 19:29:05 Asia/Kolkata] PHP Warning: require(/home/nadiarafl/public_html/var..\vendor\symfony\symfony\src\Symfony\Component\ClassLoader\ApcClassLoader.php): failed to open stream: No such file or directory in /home/nadiarafl/public_html/var/bootstrap.php.cache on line 1780
[27-Nov-2016 19:29:05 Asia/Kolkata] PHP Warning: require(/home/nadiarafl/public_html/var..\vendor\symfony\symfony\src\Symfony\Component\ClassLoader\ApcClassLoader.php): failed to open stream: No such file or directory in /home/nadiarafl/public_html/var/bootstrap.php.cache on line 1780
[27-Nov-2016 19:29:05 Asia/Kolkata] PHP Fatal error: require(): Failed opening required '/home/nadiarafl/public_html/var..\vendor\symfony\symfony\src\Symfony\Component\ClassLoader\ApcClassLoader.php' (include_path='.:/opt/alt/php56/usr/share/pear:/opt/alt/php56/usr/share/php') in /home/nadiarafl/public_html/var/bootstrap.php.cache on line 1780

the above error log is generated by server...
I updated my symfony to 3.1.7. If i remove this line 1780 in bootstrap.php.cache, it works fine in prod hosting server:
namespace {require DIR.'\..\vendor\symfony\symfony\src\Symfony\Component\ClassLoader\ApcClassLoader.php';}