HHVM v3.13.0 Silently Fails, Causing “Bad Gateway” Errors

If you’re suddenly getting “Bad Gateway” errors on your HHVM setup and it’s happened in the last week or so, it’s probably this problem.

In a nutshell, HHVM running in daemon mode seems to silently crash (leaving no error messages that I could find) after serving a few requests. On this server it would crash instantly if a fatal error was generated, but it seemed to serve several normal requests fine before finally dying.

Running under server mode it seems to work as normal.

Updated 2016-04-07 – as per the Github linked above this is now fixed in v3.13.1.

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