Error: listen eacces

Did you try run­ning your appli­ca­tion on port# < 1024 and faced the fol­low­ing error?

Error: listen EACCES

It means you do not have enough per­mis­sion to lis­ten on port# < 1024. If you run the same com­mand with ele­vated priv­i­lages then you should not see that error. If you are on *nix based sys­tem using sudo before your com­mand should resolve this issue. For exam­ple, using fol­low­ing com­mand allowed me to host my appli­ca­tion on port# 443

sudo npm start

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