Update from 3.1.6 to 3.1.7 broken - Multiserver-Setup
OS: Debian 9
Updating the master went fine, but on the other servers:
PHP Fatal error: Uncaught Error: Call to undefined function mb_detect_encoding() in /tmp/ispconfig3_install/install/lib/mysql.lib.php:445 Stack trace: #0 /tmp/ispconfig3_install/install/lib/mysql.lib.php(163): db->escape('validate_passwo...') #1 /tmp/ispconfig3_install/install/lib/mysql.lib.php(228): db->_build_query_string('SELECT plugin_n...', Array) #2 /tmp/ispconfig3_install/install/lib/mysql.lib.php(267): db->_query('SELECT plugin_n...', Array) #3 /tmp/ispconfig3_install/install/lib/mysql.lib.php(316): db->query('SELECT plugin_n...', Array) #4 /tmp/ispconfig3_install/install/lib/update.lib.php(138): db->queryAllRecords('SELECT plugin_n...', Array) #5 /tmp/ispconfig3_install/install/update.php(292): updateDbAndIni() #6 {main} thrown in /tmp/ispconfig3_install/install/lib/mysql.lib.php on line 445