Plugin install error: Cannot call method 'indexOf' of undefined - splashScreen plugin

AtifMacPro:cordova wison$ cordova plugin add https://github.com/apache/cordova-plugin-splashscreen.git
Fetching plugin "https://github.com/apache/cordova-plugin-splashscreen.git" via git clone
Installing "cordova-plugin-splashscreen" for ios
TypeError: Cannot call method 'indexOf' of undefined
at /usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/plugman/install.js:232:55
at Array.forEach (native)
at getEngines (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/plugman/install.js:211:13)
at runInstall (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/plugman/install.js:281:22)
at /usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/plugman/install.js:81:16
at _fulfilled (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:787:54)
at self.promiseDispatch.done (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:816:30)
at Promise.promise.promiseDispatch (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:749:13)
at /usr/local/lib/node_modules/cordova/node_modules/q/q.js:810:14
at flush (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:108:17)