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503 Service Temporarily Unavailable in Java hosting

In Java hosting the '503 Service Temporarily Unavailable' error message usually means your application server is down. Please login to your Java Control Panel to check it and browse your Java application server logs for possible reason before starting the application server again. The message is generated by Apache frontend when the fronten cannot successfully communicate with application server using the protocol you set in Java Control Panel (AJP, HTTP).

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