I used navicat to backup the database. there are 4 databases, information_schema,mysql,onlyoffice and performance_schema.Now it's ok. but only can restore the databases mysql and onlyoffice. the other two can't restore successfully. access is denied.
actually i was migrating the onlyoffice to the other server. i copied the data and webstudio directory and restore the 2 databases. But now can't log in the system. It says the account name doesn't exist. really don't know why.