Did you try what your error message suggests? Also didn’t know ybat nginx could do i2p, unless thats new or you’re using some extension

redirects port 80 to wikipedia

Unless Im missunderstanding… why? You are using a reverse proxy and https for your services? If you aren’t, that’s a terrible vulnerabulity you’ve made yourself. Why would you need to access a web service on any other port than https? A reverse proxy allows you to use subdomain routing to access different services behind your domain. Your companies firewall is certainly blocking you from accessing nonstandard ports.