SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes

[roberto3x]

The installation process stops and reports an error... SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes
The tables are created in the database (I'm not sure if all of them are).

[Dr-Dupont]

To help others with this problem:
The error is because of UTF8mb4 and "UNIQUE KEY attribute", in the config table, and you are running an older MySQL.
You can add "innodb_large_prefix=1" to your MySQL ini file, or edit "db/database.sql" with the following:
attribute varchar(191) NULL,