执行安装迁移数据命令报错，admin_config` add unique `admin_config_name_unique`

[klmahua]

管理这是什么错误，，，具体错误代码如下： In Connection.php line 664:

SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was t oo long; max key length is 1000 bytes (SQL: alter table admin_config add unique admin_config_name_unique(name))

In PDOStatement.php line 119:

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

In PDOStatement.php line 117:

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

[klmahua]

数据库版本mysql5.7