Cannot find plugin.xml for plugin "io.jxcore.node"

[mzszhznn]

use command “cordova plugin add jxcore-cordova/io.jxcore.node/”,
I get this error message: “Error: Cannot find plugin.xml for plugin "io.jxcore.node". Please try adding it again.”

I was referring to the https://modernweb.com/2015/03/19/develop-an-ios-application-with-node-js-and-cordova/ operation.
How can I solve this problem?

[mzszhznn]

$ jx -v
v0.10.40
$ cordova --version
6.3.1
$ ls jxcore-cordova/io.jxcore.node
jx.h libcares.a libhttp_parser.a libmozjs.a libsqlite3.a
jx_result.h libchrome_zlib.a libjx.a libopenssl.a libuv.a