local plugin fails to fetch/install during restore

cordova prepare
Warning: using prerelease version 7.0.2-dev (cordova-lib@7.0.2-dev)
Discovered plugin "phonegap-plugin-push" in config.xml. Adding it to the project
Failed to restore plugin "phonegap-plugin-push" from config.xml. You might need to try adding it again. Error: Failed to fetch plugin phonegap-plugin-push@../../../phonegap/phonegap-plugin-push via registry.
Probably this is either a connection problem, or plugin spec is incorrect.
Check your connection and plugin name/version/URL.
Error: npm: Command failed with exit code 254 Error output:
npm ERR! addLocal Could not install /Users/steveng/repo/cordova/phonegap/phonegap-plugin-push
npm ERR! path /Users/steveng/repo/cordova/phonegap/phonegap-plugin-push
npm ERR! code ENOENT
npm ERR! errno -2
npm ERR! syscall open
npm ERR! enoent ENOENT: no such file or directory, open '/Users/steveng/repo/cordova/phonegap/phonegap-plugin-push'
npm ERR! enoent This is most likely not a problem with npm itself
npm ERR! enoent and is related to npm not being able to find a file.
npm ERR! enoent