Ecommerce plugin issue after to 2.11.0 from 2.11.0-b4 (no replies)

Hello, I was running 2.11.0-b4 and noticed that 2.11.0 was "officially" released.

After upgrade now receive this:

Plugin Ecommerce has defined the method getInformation() and as well as having a plugin.json file. Please delete the getInformation() method from the plugin class. Alternatively, you may delete the plugin directory from plugins/Ecommerce

Any recommendations? (BTW removing plugin.json does not help. Removing Ecommerce plugin directory causes more issues)

Thanks in advance

Edit:
1) BTW, in most cases, this prevents you from doing anything else; even doing a Login to the system
2) It prevents you from accessing the Administartion menu
3) I used the "3 Step Manual Upgrade" to perform this upgrade