Error: spawn EACCES ionic cordova add plugin issue

Failed to install 'onesignal-cordova-plugin': Error: spawn EACCES     at exports._errnoException (util.js:1018:11)     at ChildProcess.spawn (internal/child_process.js:319:11)     at Object.exports.spawn (child_process.js:378:9)     at Object.exports.spawn (/Users/srinivas/Documents/Educational/version2/Pregnancy/platforms/android/cordova/node_modules/cordova-common/src/superspawn.js:134:31)  ...

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