From https://github.com/PomeloFoundation/Pomelo.EntityFrameworkCore.MySql/issues/1577 An exception `Cannot Open when State is Connecting.` occurs when reopening a `MySqlConnection` after opening was cancelled.
From PomeloFoundation/Pomelo.EntityFrameworkCore.MySql#1577
An exception
Cannot Open when State is Connecting.occurs when reopening aMySqlConnectionafter opening was cancelled.