数据表迁移报错 1071 max key length is 767 bytes

[liushuai05]

我的mysql版本是： 5.5.62
报错内容如下：
Illuminate\Database\QueryException : SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: alter table lara_users add unique lara_users_email_unique(email))
at /vendor/laravel/framework/src/Illuminate/Database/Connection.php:664
660| // If an exception occurs when attempting to run a query, we'll format the error
661| // message to include the bindings with SQL, which will make this exception a
662| // lot more helpful to the developer instead of just the database's errors.
663| catch (Exception $e) {

664| throw new QueryException(
665| $query, $this->prepareBindings($bindings), $e
666| );
667| }
668|

Exception trace:

1 Doctrine\DBAL\Driver\PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes")

/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:119

2 PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes")

/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:117

Please use the argument -v to see more details.

[wanglelecc]

mysql 版本需要 5.7