AWS Lambda event.body parsing error in production

I am using https://github.com/ARautio/aws-lambda-pdf-generator-puppeteer to create pdfs serverlessly. I have made some changes to get html to process as POST data.

I ran command: yarn deploy:prod to deploy it on aws lambda.

After deploying, when i tried to hit the server, it gave me 500 error.

Code:

  console.log("Data", event.body)
  const { apiKey = '', html = '', pageConfig = {}, name, customPageConfig = false } = JSON.parse(event.body)

On local, it's working fine, but when I deploy it, it is showing me error:

Data 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

Logs from production server:

2020-07-06T10:28:03.350Z    d1c38673-19f0-47ef-a748-cf8912e9cc82    INFO    
03:58:03 pm
2020-07-06T10:28:03.352Z    d1c38673-19f0-47ef-a748-cf8912e9cc82    ERROR   SyntaxError: Unexpected token e in JSON at position 0
    at JSON.parse (<anonymous>)
    at module.exports.pdf (/var/task/pdf.js:17:92)
    at Runtime.handler (/var/task/serverless_sdk/index.js:9:131855)
    at Runtime.handleOnce (/var/runtime/Runtime.js:66:25)
03:58:03 pm
2020-07-06T10:28:03.410Z    d1c38673-19f0-47ef-a748-cf8912e9cc82    ERROR   Invoke Error    {
    "errorType": "SyntaxError",
    "errorMessage": "Unexpected token e in JSON at position 0",
    "stack": [
        "SyntaxError: Unexpected token e in JSON at position 0",
        "    at JSON.parse (<anonymous>)",
        "    at module.exports.pdf (/var/task/pdf.js:17:92)",
        "    at Runtime.handler (/var/task/serverless_sdk/index.js:9:131855)",
        "    at Runtime.handleOnce (/var/runtime/Runtime.js:66:25)"
    ]
}
03:58:03 pm

I am sending:

 {
   "apiKey": "asd",
   "html": "<h1>Hello</h1>",
   "pageConfig": {
      "size": "A4"
    }
 }