Fehlermeldung
An exception occurred while executing a query: SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes
Lösung
Hinzufügen/Ergänzen in /etc/mysql/my.cnf
[mysqld]
innodb_default_row_format=dynamic
innodb-file-format=barracuda
innodb-file-per-table=ON
innodb-large-prefix=ON
Danach
service mysql restart