nodecore CLI wont connect to 127.0.0.1:10501

client just repeats messages like this one:
Aug 12, 2018 8:26:24 PM io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference cleanQueue
SEVERE: *~*~*~ Channel ManagedChannelImpl{logId=1111, target=127.0.0.1:10501} was not shutdown properly!!! ~*~*~*
    Make sure to call shutdown()/shutdownNow() and wait until awaitTermination() returns true.
java.lang.RuntimeException: ManagedChannel allocation site
        at io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference.(ManagedChannelOrphanWrapper.java:103)
        at io.grpc.internal.ManagedChannelOrphanWrapper.(ManagedChannelOrphanWrapper.java:53)
        at io.grpc.internal.ManagedChannelOrphanWrapper.(ManagedChannelOrphanWrapper.java:44)
        at io.grpc.internal.AbstractManagedChannelImplBuilder.build(AbstractManagedChannelImplBuilder.java:410)
        at nodecore.cli.services.AdminServiceClient.(AdminServiceClient.java:63)
        at nodecore.cli.DefaultShell.connect(DefaultShell.java:70)
        at nodecore.cli.DefaultShell.access$100(DefaultShell.java:25)
        at nodecore.cli.DefaultShell$1.bound(DefaultShell.java:510)
        at nodecore.cli.DefaultShell$1.run(DefaultShell.java:479)
        at java.lang.Thread.run(Unknown Source)

anyone have a similar issue or a solution??