Updated RoundcubePlugins 1.2.2 to RoundcubePlugins 1.2.3. -> "502 Bad Gateway - nginx"

Ok.
I think, I uninstalled the apc.

# pecl uninstall apc
pecl/apc not installed

# apt-get purge php-apc

reboot the system

php -m

[PHP Modules]
apc??? - How can it upload???
apcu
bcmath
bz2
calendar
Core
ctype
curl
date
dba
dom
ereg
exif
fileinfo
filter
ftp
gd
geoip
gettext
hash
iconv
imap
intl
json
libxml
mbstring
mcrypt
memcached
mhash
mysql
mysqli
....

I don't understand how can it run I I uninstalled apc.

/etc/php5/fpm/conf.d$ php -r "print phpinfo();" | grep ".ini"
Configuration File (php.ini) Path => /etc/php5/cli
Loaded Configuration File => /etc/php5/cli/php.ini
Scan this dir for additional .ini files => /etc/php5/cli/conf.d
Additional .ini files parsed => /etc/php5/cli/conf.d/10-mysqlnd.ini,
/etc/php5/cli/conf.d/10-pdo.ini,
/etc/php5/cli/conf.d/20-apcu.ini,
/etc/php5/cli/conf.d/20-curl.ini,
/etc/php5/cli/conf.d/20-gd.ini,
/etc/php5/cli/conf.d/20-geoip.ini,
/etc/php5/cli/conf.d/20-imap.ini,
/etc/php5/cli/conf.d/20-intl.ini,
/etc/php5/cli/conf.d/20-mcrypt.ini,
/etc/php5/cli/conf.d/20-memcached.ini,
/etc/php5/cli/conf.d/20-mysql.ini,
/etc/php5/cli/conf.d/20-mysqli.ini,
/etc/php5/cli/conf.d/20-pdo_mysql.ini,
/etc/php5/cli/conf.d/uploadprogress.ini
user_ini.cache_ttl => 300 => 300
user_ini.filename => .user.ini => .user.ini
Supported handlers => cdb cdb_make db4 inifile flatfile qdbm
com_init_db => 0
Classes => AppendIterator, ArrayIterator, ArrayObject, BadFunctionCallException, BadMethodCallException, CachingIterator, CallbackFilterIterator, DirectoryIterator, DomainException, EmptyIterator, FilesystemIterator, FilterIterator, GlobIterator, InfiniteIterator, InvalidArgumentException, IteratorIterator, LengthException, LimitIterator, LogicException, MultipleIterator, NoRewindIterator, OutOfBoundsException, OutOfRangeException, OverflowException, ParentIterator, RangeException, RecursiveArrayIterator, RecursiveCachingIterator, RecursiveCallbackFilterIterator, RecursiveDirectoryIterator, RecursiveFilterIterator, RecursiveIteratorIterator, RecursiveRegexIterator, RecursiveTreeIterator, RegexIterator, RuntimeException, SplDoublyLinkedList, SplFileInfo, SplFileObject, SplFixedArray, SplHeap, SplMinHeap, SplMaxHeap, SplObjectStorage, SplPriorityQueue, SplQueue, SplStack, SplTempFileObject, UnderflowException, UnexpectedValueException

I don't see the apc error and apc.ini.

# service php5-fpm restart
[FAIL] Restarting PHP5 FastCGI Process Manager: php5-fpm failed!

Syslog:
kernel: [ 2039.617425] php5-fpm[19788]: segfault at ffffffffffffffff ip 00007f7e3bcb1828 sp 00007ffc43d4e908 error 7 in libpthread-2.13.so[7f7e3bca7000+17000]

Is this kernel error?

What should I see?