PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/20121212/redis.so' - /usr/lib/php/20121212/redis.so: undefined symbol: igbinary_serialize in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/20121212/memcached.so' - /usr/lib/php/20121212/memcached.so: undefined symbol: igbinary_serialize in Unknown on line 0
Got this errors in /var/root/mail.
Any concerns ?