unable to launch [] if it is a script, you may be missing a '#!' declaration

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Hi all,

i am trying to add a package[myPkg] with one cpp ros node with one service in the capability server. but it is showing "unable to launch [] if it is a script, you may be missing a '#!' declaration " but when i ran the command "rosservice call /capability_server/get_interfaces", it is giving my package name as below interfaces: ['myPkg']

here is the problem : but when i ran 'rosservice call /capability_server/start_capability myInterface myprovider' it is giving me error as i mentioned eariler.

Any help would be appriciated,

Thanks,