# Prerender silently failures if useFetch throwns an error in middleware
No response returned from render handler [upgraded from RC.12 to 13]
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How to Fix this problem when I run it after nuxt build
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503 Server Unavailable while server iss running
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Nuxt 3 fails to run fetch or render any components on client side – only works on full page refresh on server
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ERROR Exiting due to prerender errors.
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