Reverse Proxy didn't work

[kidd_wu]

I will set reverse proxy to mapping the port 8080, and always get the 502 bad gateway error, the following image is my librenms.conf

check the error.log is following

the php-fpm config

have someone to help me to check the issue?
thanks.

[kidd_wu]

I tried to the Environment Variables, and didn’t know to add the Trusted Reverse Proxies in which configuration?

https://docs.librenms.org/Support/Environment-Variables/#trusted-reverse-proxies

[kidd_wu]

maybe I ask the wrong question, my mean is I have a 10.20.2.54 IP that will replace the 172.15.0.54, how can I do it?

my dashboard graph can’t show the picture

/opt/librenms/.env