typescript - Prod build 404 error after upgrading angular 2 to angular 4 -

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upgraded application angular 2 angular 4, created build.

but getting below error after deploying server.

oops! error occurred  server returned "404 not found".  broken. please let know doing when error occurred. fix possible. sorry inconvenience caused.

in local getting below error while accessing dist/index.html.

error error: uncaught (in promise): securityerror: failed execute 'replacestate' on 'history': history state object url


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