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I have done to fix this in Ubuntu 16.04 by reinstalling libnss3 Hello I get the below at runtime when I follow the build steps and then try to run on Lambda 

serverless chrome NSS_VersionCheck("3.26") failed

I was able to work around this by disabling optimization.concatenateModules  (defaults to true in production mode) 

serverless webpack External modules are not packaged with webpack 5

I'm getting this same issue but with no local modules and with a yarn.lock file that's in sync with package.json 

serverless webpack Error when packager is yarn

Why closing this without any solution ? I an running into the error Unable to start Chrome when running on Lambda with NodeJS10 

serverless chrome Unable to start Chrome in NodeJS10.x

@jkruse14: Unable to import module 'handler' usually occurs due to missing dependencies The error is misleading in this case 

serverless webpack Unable to import module 'handler': Error revisited

I am using the latest version 1.0.0.34 and got this error sometimes after spawning new headless Chrome on AWS Lambda 