My Lambda is throwing a invoke error timeout - amazon-web-services

Question

Normally my lambda runs fine, today I am starting to receive this error:
ERROR Invoke Error
{
"errorType": "TimeoutError",
"errorMessage": "Connection timed out after 120000ms",
"code": "TimeoutError",
"message": "Connection timed out after 120000ms",
"time": "2020-11-27T10:34:39.272Z",
"region": "eu-west-1",
"hostname": "lambda.eu-west-1.amazonaws.com",
"retryable": true,
"stack": [
"TimeoutError: Connection timed out after 120000ms",
" at ClientRequest.<anonymous> (/var/task/node_modules/aws-sdk/lib/http/node.js:83:34)",
" at Object.onceWrapper (events.js:286:20)",
" at ClientRequest.emit (events.js:198:13)",
" at ClientRequest.EventEmitter.emit (domain.js:448:20)",
" at TLSSocket.emitRequestTimeout (_http_client.js:673:40)",
" at Object.onceWrapper (events.js:286:20)",
" at TLSSocket.emit (events.js:198:13)",
" at TLSSocket.EventEmitter.emit (domain.js:448:20)",
" at TLSSocket.Socket._onTimeout (net.js:443:8)",
" at ontimeout (timers.js:436:11)"
]
}
I don't have any clue what might be causing this, I know that this lambda invokes several lambdas and awaits on all of them to conclude, I checked the logs on cloudwatch for each one and all of them had completed with success.
Here is a snippet of the code I use to trigger all those child lambdas and wait for them:
function invokeAll(){
const baseLambdaPayload = {
arg1: args.myarg1,
arg2: args.myarg2,
arg3: args.myarg3,
arg4: args.myarg4
};
lambdaInvocations = [
...lambdaInvocations,
triggerLamdba(
'lambda1', {
...baseLambdaPayload,
morePayload: await getMorePayload()
}),
triggerLamdba(
'lambda2', baseLambdaPayload),
triggerLamdba(
'lambda3', baseLambdaPayload),
triggerLamdba(
'lambda4', baseLambdaPayload)
];
return await Promise.all(lambdaInvocations);
}
const triggerLamdba = (name, payload) => {
const params = {
FunctionName: name,
InvocationType: 'RequestResponse',
Payload: JSON.stringify(payload)
};
return lambda.invoke(params).promise();
}
Any tips to where I should look into? Thanks.