code from here: https://dev.to/arealesramirez/how-to-use-error-handler-middleware-with-express-js-and-typescript-431n#:~:text=How%20to%20Write%20a%20Custom%20Error%20Handler%20in,file.%20...%204%204.%20Test%20Custom%20Handler%20
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code from here: https://dev.to/arealesramirez/how-to-use-error-handler-middleware-with-express-js-and-typescript-431n#:~:text=How%20to%20Write%20a%20Custom%20Error%20Handler%20in,file.%20...%204%204.%20Test%20Custom%20Handler%20