[Varnish] #1826: 503 backend error after response with 204 without a body, varnish 4.1

[Varnish]

#1826: 503 backend error after response with 204 without a body, varnish 4.1
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 Reporter:  xrowkristina  |       Owner:
     Type:  defect        |      Status:  closed
 Priority:  high          |   Milestone:
Component:  build         |     Version:  4.1.0
 Severity:  normal        |  Resolution:  invalid
 Keywords:                |
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Comment (by xrow):

 Hi,

 this sounds like an php-fpm bug or apache bug. We had the same issue as
 you, but it was an symfony php bug. I don´t mind varnish being strict. Now
 we have this sencond issue, but we don´t know yet where it belongs to.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1826#comment:10>
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