i entered do-release-upgrade for my server and then i got this error message for my server, The following packages were automatically installed and are no longer required: apt-xapian-index aptitude-common dh-apparmor libboost-iostreams1.54.0 libboost-iostreams1.58.0 libclamav6 libclass-accessor-perl libcwidget3 libdbd-mysql-perl libept1.4.12 libicu52 libio-string-perl libisl10 liblinear1 libparse-debianchangelog-perl libsigc+±2.0-0c2a libsub-name-perl libvpx1 libxapian-1.3-5 libxapian22v5 php-http-request php-net-dime php-net-url php5-intl php5-pspell php5-sqlite python-cheetah python-json-pointer python-jsonpatch python-oauth python-prettytable python-xapian python-yaml python3-xapian1.3 tinymce Use ‘apt autoremove’ to remove them. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 6 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] y Setting up mysql-server-5.7 (5.7.13-0ubuntu0.16.04.2) … Renaming removed key_buffer and myisam-recover options (if present) ERROR: Unable to start MySQL server: 2016-08-02T07:42:43.207155Z 0 [ERROR] unknown variable ‘log_slow_queries=/var/lo g/mysql/mysql-slow.log’ 2016-08-02T07:42:43.215232Z 0 [ERROR] Aborting Please take a look at https://wiki.debian.org/Teams/MySQL/FAQ for tips on fixing common upgrade issues. Once the problem is resolved, run apt-get --fix-broken install to retry. dpkg: error processing package mysql-server-5.7 (–configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.7; however: Package mysql-server-5.7 is not configured yet.
dpkg: error processing package mysql-server (–configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup erro r from a previous failure. Setting up roundcube-core (1.2~beta+dfsg.1-0ubuntu1) . … Determining localhost credentials from /etc/mysql/debian.cnf: succeeded. dbconfig-common: writing config to /etc/dbconfig-common/roundcube.conf ERROR: Failed to connect to memcached. Please check configurationdpkg: error pro cessing package roundcube-core (–configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already No apport report w ritten because MaxReports is reached already dpkg: dependency problems prevent co nfiguration of roundcube: roundcube depends on roundcube-core (= 1.2~beta+dfsg.1-0ubuntu1); however: Package roundcube-core is not configured yet.
dpkg: error processing package roundcube (–configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of roundcube-plugins: roundcube-plugins depends on roundcube-core (= 1.2~beta+dfsg.1-0ubuntu1); howev er: Package roundcube-core is not configured yet.
dpkg: error processing package roundcube-plugins (–configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of roundcube-plugins-extra: roundcube-plugins-extra depends on roundcube-core (>= 1.1.2); however: Package roundcube-core is not configured yet.
dpkg: error processing package roundcube-plugins-extra (–configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already Errors were encoun tered while processing: mysql-server-5.7 mysql-server roundcube-core roundcube roundcube-plugins roundcube-plugins-extra E: Sub-process /usr/bin/dpkg returned an error code (1)
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