EROFS error when hitting lambda function endpoint - amazon-web-services

Question

I have deployed my expressjs code to lambda using claudiajs.When I hit the API endpoint generated every alternate request gives me internal server error.I checked the logs and found this
"errorType": "Error",
"errorMessage": "EROFS: read-only file system, mkdir '/var/task/logs'",
"code": "EROFS",
"stack": [
"Error: EROFS: read-only file system, mkdir '/var/task/logs'"
],
"cause": {
"errorType": "Error",
"errorMessage": "EROFS: read-only file system, mkdir '/var/task/logs'",
"code": "EROFS",
"stack": [
"Error: EROFS: read-only file system, mkdir '/var/task/logs'"
],
"errno": -30,
"syscall": "mkdir",
"path": "/var/task/logs"
},
"isOperational": true,
"errno": -30,
"syscall": "mkdir",
"path": "/var/task/logs"
}
I am not able to figure out what could be the issue and why is it occurring only on alternate requests and not every request.How do I go on about it?
Any help would be appreciated.

Answer 1

Lambda dosen't allow you to write the space allocated to you.
Since, you are trying to create a directory may be to write logs, so its giving you the error.
To write application logs with lambda you can use AWS Cloudwatch log streaming.
https://www.npmjs.com/package/lambda-log

Answer 2

You can use /tmp directory for some temporary files, but there is also a limit 512Mb.
Check these links:
AWS Lambda Limits
Accessing Amazon CloudWatch Logs for AWS Lambda