Encounter `Init<LoadError>: cannot load such file -- rack` on Production environment

[BlazingRockStorm]

I'm working on pull #28 since AWS Lambda now only support Ruby 3.2 and Ruby 3.3, and encounter the error:

The code worked fine on local and passed the tests(as I showed on the pull #28 )

Can anyone teach me how to debug this on production or help me with my pull request?