After I upgraded MySQL 5.7 to MySQL 8.0, I started MySQL again and I got an error:The user specified as a definer ('mysql.infoschema'@'localhost') does not exist' when trying to dump tablespaces. I don't understand why this problem occurs. And I want to know how to solve it
![Mysql Error:The user specified as a definer ('mysql.infoschema'@'localhost') does not exist' when trying to dump tablespaces](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)