You are not allowed to use System.Net.WebClientSolved
I have googled this so many times and I see tons of info on hosts blocking different things and such which I am pretty sure is not the case since I am hosting it on my computer. I have heard that oxide blocks reading from files and I guess webclient since I cant use it. I understand its reason is because of malicoius plugins but I just want this to work for my own private plugin. What can I change in the code or else where to make this work on my server? Also pretty new to c# so please explain carefully :)
See https://umod.org/documentation/umod/api/security#sandbox

Tl;dr: it isn't allowed in plugins. If you need web requests, we provide a Web Requests API. We don't support self-made builds, but you could always create an extension to handle it as well. Source and examples of extension can be found at https://github.com/theumod

If you are writing a plugin for a Unity-based game, Unity also provides various methods for web requests.
Ty so much
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