The function ran past its configured timeout and the runtime killed it mid-flight.
The function hit its memory ceiling — an OOM kill, a heap exhaustion, or a silent ceiling touch.
The handler never ran. The runtime failed while loading your code or resolving your handler.
A module, class, or binary your code needs is not in the deployment package.
- Couldn't find valid bootstrap(s): [/var/task/bootstrap /opt/bootstrap]
- InvalidParameterValueException: Unzipped size must be smaller than 262144000 bytes
- java.lang.ClassNotFoundException: com.example.MissingClass
- java.lang.NoClassDefFoundError: com/example/MissingClass
- ModuleNotFoundError: No module named 'requests'
- Runtime.ImportModuleError: Error: Cannot find module 'lodash'
Your code threw, rejected, or exited. The invocation failed after the handler started.
- ConditionalCheckFailedException: The conditional request failed
- Error: EMFILE: too many open files, open '/tmp/chunk-8841.bin'
- Error: ENOSPC: no space left on device, write
- ResourceNotFoundException: Requested resource not found
- Runtime.UnhandledPromiseRejection: TypeError: Cannot read properties of undefined
- TransactionCanceledException: Transaction cancelled, please refer cancellation reasons for specific reasons [ConditionalCheckFailed, None]
- TypeError: Cannot read properties of undefined (reading 'customer')
- Unable to marshal response: Object of type Decimal is not JSON serializable
- ValidationException: One or more parameter values were invalid: Missing the key orderId in the item
An IAM policy, a resource policy, or a KMS grant denied the call.
- AccessDeniedException: User: arn:aws:sts::111122223333:assumed-role/orders-fn-role/orders-fn is not authorized to perform: dynamodb:PutItem on resource: arn:aws:dynamodb:us-east-1:111122223333:table/orders
- InvalidParameterValueException: The role defined for the function cannot be assumed by Lambda.
- KMSAccessDeniedException: Lambda was unable to decrypt the environment variables because KMS access was denied
- The provided execution role does not have permissions to call CreateNetworkInterface on EC2
- User: arn:aws:iam::123456789012:user/developer is not authorized to perform: lambda:InvokeFunction on resource: my-function
A VPC, NAT, ENI, DNS, or downstream-connectivity failure.
- EFSMountFailureException: The function could not mount the Amazon EFS file system
- ENILimitReachedException: The elastic network interface limit was reached for the function's VPC
- Error: connect ECONNREFUSED 10.0.4.22:5432
- Error: connect ETIMEDOUT 10.0.2.15:443
- Error: getaddrinfo EAI_AGAIN secretsmanager.us-east-1.amazonaws.com
- Error: getaddrinfo ENOTFOUND api.internal.acme.io
- Error: read ECONNRESET
- InvalidSubnetIDException: The subnet ID provided in the Lambda function VPC configuration is not valid.
- ReadTimeoutError: Read timed out. (read timeout=15)
- Unable to execute HTTP request: Certificate for abc.us-east-1.amazonaws.com doesn't match any of the subject alternative names
A concurrency, rate, or provisioned-throughput limit rejected the request.
- ProvisionedThroughputExceededException: The level of configured provisioned throughput for the table was exceeded
- RequestEntityTooLargeException: Request must be smaller than 6291456 bytes for the InvokeFunction operation
- Specified ConcurrentExecutions for function decreases account's UnreservedConcurrentExecution below its minimum value
- ThrottlingException: Rate exceeded
The function never got as far as running. These surface while you are creating, updating, or configuring it — in CloudFormation output, a CLI response, or the console.
- 'MemorySize' value failed to satisfy constraint: Member must have value less than or equal to 3008
- A function is stuck in the Pending state for several minutes.
- CodeStorageExceededException: Code storage limit exceeded.
- Invalid alias configuration for provisioned concurrency
- InvalidParameterValueException: Lambda was unable to configure your environment variables because the environment variables you have provided exceeded the 4KB limit.
- InvalidParameterValueException: The runtime parameter of nodejs16.x is no longer supported for creating or updating AWS Lambda functions
- InvalidZipFileException: Lambda could not unzip the deployment package.
- Lambda layer conversion failed.
- ResourceConflictException: The operation cannot be performed at this time. An update is in progress for resource: arn:aws:lambda:us-east-1:111122223333:function:orders-fn
Lambda Telemetry API and Advanced Logging Controls records — what each one means in your logs.
Nothing matches that filter.
LogStitch finds this automatically, across every invocation in your account.
Paste a log excerpt into the free web stitcher and see it grouped, classified, and measured in your browser — nothing is uploaded. Or run the Mac app against your own AWS profiles and get the same view over every function you own.