"errorMessage": "Cannot convert undefined or null to object",

[Neferpitooou]

{
"errorType": "TypeError",
"errorMessage": "Cannot convert undefined or null to object",
"trace": [
"TypeError: Cannot convert undefined or null to object",
" at Function.entries ()",
" at module.exports (/var/task/node_modules/lowercase-keys/index.js:5:36)",
" at lambdaFunction (/var/task/node_modules/@probot/adapter-aws-lambda-serverless/lambda-function.js:19:28)",
" at Runtime.handleOnceNonStreaming (file:///var/runtime/index.mjs:1173:29)"
]
}

My probot lambda function is having issue above.