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AWS Lambda configuration error

This error occurs when the Lambda function is not able to initialise and the execution halts before reaching the handler function.

Dashbird continuously monitors and analyses your serverless applications to ensure reliability, cost and performance optimisation and alignment with the Well Architected Framework.

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Type: LOG EVENT
Severity: CRITICAL
Error message: 
*Handler '*' missing on module ||
*Unable to import module '*': Error ||
*module initialization error: 

This error occurs when the Lambda function is not able to initialise and the execution halts before reaching the handler function.

Usually, this is caused by an issue in the require or include statements of the code. You should look out for typos or inconsistencies in the file structure of your project.

Below are solutions and discussions for different variations of this problem.
[Python] AWS Lambda Python: ‘handler’ missing on module
[Node.js] AWS Lambda module initialization error
[Node.js] AWS lambda function error – Unable to import module ‘index’: Error

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