Cannot find module 'mediasoup-server'

[shyam123456789]

I have already installed mediasoup-server' while getting Error: Cannot find module 'mediasoup-server'

package.json

{
"name": "mediasoup-recording",
"description": "mediasoup demo - WebRTC recording",
"version": "1.0.0",
"main": "server.js",
"scripts": {
"prestart": "browserify client.js --outfile client-bundle.js --standalone client",
"start": "node server.js"
},
"repository": {
"type": "git",
"url": "https://github.com/Kurento/mediasoup-demos.git"
},
"author": "Juan Navarro [email protected] (https://github.com/j1elo)",
"license": "Apache-2.0",
"bugs": {
"url": "https://github.com/Kurento/mediasoup-demos/issues"
},
"homepage": "https://github.com/Kurento/mediasoup-demos",
"dependencies": {
"browserify": "^16.0.0",
"express": "^4.0.0",
"ffmpeg-static": "^4.0.0",
"ip": "^1.1.5",
"media-server": "^0.1.2",
"mediasoup": "~3.6.0",
"mediasoup-client": "~3.6.0",
"socket.io": "^2.0.0",
"socket.io-client": "^2.0.0",
"socket.io-promise": "^1.0.0"
},
"devDependencies": {
"eslint": "^6.0.0",
"prettier": "~2.0.0"
}
}