I have installed Magento 2.2 using Bitnami on Google Cloud and continue to get
Error 503 Backend fetch failed
Backend fetch failed
Varnish cache server
XID continues to increase. I have added -p http_resp_hdr_len and -p http_resp_size, setting them to increasingly high numbers but it makes no difference.
Magento worked until I restored my own Magento backup following the instructions in the Bitnami documentation. Please help because this would be great if it works!