It is wat it says: "Java action is not implemented". But that is not what you expect, because you converted from 5.12 to 6.0. I don't know the reason but you can solve thisby importing the module AppCloudServices from the appstore again. Choose 'replace' as option.
Thank you for your reply.
I was importing the module AppCloudServices from the appstore again as you tald. Some Error has occured, but finally I was able to run the App at locally. I tried below.
I don't know correct answer this procedure. But It serves the purpose.
For reference.