我无法使用YDN-DB(“版本更改事务在upgradeneeded事件处理程序中中止”)。

I'm having a problem to start with YDN-DB. I mean. I set up a scheme, I initialized the database, but when instantiating throws an error that says "ConstraintError: DOM Exception IDBDatabase 0". In the event handler "fail" gives me "Version change transaction was aborted in upgradeneeded event handler.". Reading about the problem I found with I'm having a problem to start with YDN-DB. I me