CMD 5.1.0.26 App Upgrade Problem

running from the application root

Code:

sencha app upgrade -touch

generated the following error:

Code:

Sencha Cmd v5.1.0.26
[WRN] Did not locate framework package
[INF] Loading configuration for framework directory: null
[ERR] java.lang.NullPointerException
     at java.io.File.<init>(Unknown Source)
     at com.sencha.command.environment.BuildEnvironment.load(BuildEnvironment.java:76)
     at com.sencha.command.app.AppCommands$UpgradeCommand.execute(AppCommands.java:614)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at com.sencha.util.MethodInvoker$Arguments.invoke(MethodInvoker.java:175)
     at com.sencha.cli.Command.dispatch(Command.java:43)
     at com.sencha.command.BasePluginCommands$BasePluginCommand.dispatch(BasePluginCommands.java:148)
     at com.sencha.cli.Commands.dispatch(Commands.java:64)
     at com.sencha.cli.Commands.dispatch(Commands.java:64)
     at com.sencha.command.Sencha.dispatch(Sencha.java:72)
     at com.sencha.command.Sencha.main(Sencha.java:140)

CMD 5.1.0.26 App Upgrade Problem