Snap Security

Snap security

Snap packages are sandboxed and therefore they are not by default allowed to access the password service.
For example: When you choose “Store in keychain” MySQLWorkbench is blocked by AppArmor. To fix
this, you need to execute a command similar to the following (which is to allow MySQLWorkbench access
to the password manager service)

    sudo snap connect mysql-workbench-community:password-manager-service :password-manager-service
  

References:

• https://askubuntu.com/questions/1242026/cannot-connect-mysql-workbench-to-mysql-server