502 errors after upgrading to pangolin 1.7.x #1090
Description
Hello everyone!
I upgraded my Pangolin instance to 1.7.x today. The 1.6.2 was working cleanly so far.
Unfortunately, since the update to 1.7.x (regardless of which version, I've tried them all), I'm constantly getting a 502 error from Cloudflare (proxy is active) on my sites. This also means I can no longer use my Authentik instance.
A downgrade (thanks to backup) to 1.6.2 without changing my settings solved the problem.
snip of the log:
{"level":"debug","time":"2025-07-18T19:08:55+02:00","caller":"github.com/traefik/traefik/v3/pkg/server/service/loadbalancer/wrr/wrr.go:175","message":"Service selected by WRR: https://100.89.128.4:53393"}/ {"plugin":"plugin-badger","module":"github.com/fosrl/badger","runtime":"","time":"2025-07-18T19:08:55+02:00","caller":"fmt/print.go:305","level":"debug","message":"Badger: Valid session"} {"level":"debug","time":"2025-07-18T19:08:55+02:00","caller":"github.com/traefik/traefik/v3/pkg/server/service/loadbalancer/wrr/wrr.go:175","message":"Service selected by WRR: https://100.89.128.4:53393"}/ {"plugin":"plugin-badger","module":"github.com/fosrl/badger","runtime":"","time":"2025-07-18T19:08:56+02:00","caller":"fmt/print.go:305","level":"debug","message":"Badger: Valid session"} {"level":"debug","time":"2025-07-18T19:08:56+02:00","caller":"github.com/traefik/traefik/v3/pkg/server/service/loadbalancer/wrr/wrr.go:175","message":"Service selected by WRR: https://100.89.128.4:53393"}/ {"plugin":"plugin-badger","module":"github.com/fosrl/badger","runtime":"","time":"2025-07-18T19:09:02+02:00","caller":"fmt/print.go:305","level":"debug","message":"Badger: Valid session"} {"level":"debug","time":"2025-07-18T19:09:02+02:00","caller":"github.com/traefik/traefik/v3/pkg/server/service/loadbalancer/wrr/wrr.go:175","message":"Service selected by WRR: https://100.89.128.4:53393"}/ {"level":"debug","error":"read tcp 100.89.128.1:38618->100.89.128.4:53393: read: connection reset by peer","time":"2025-07-18T19:09:02+02:00","caller":"github.com/traefik/traefik/v3/pkg/proxy/httputil/proxy.go:121","message":"502 Bad Gateway"}