You might get this error with InnoDB tables on MariaDB < 10.2.2, MySQL < 5.7.
Although, this error might be also triggered on newer versions if you switch to
COMPACT row format.
In the abovementioned releases the default InnoDB row format is COMPACT.
With this format the maximum index prefix length
is [767 bytes][max-index-prefix].
The default character set is [latin1][def-charset], but if you use