Have always used the advanced computer to control the big reactor but as of the last couple updates when I run get pastebin..... it says no such program. Im running shaders but tried without and still same problem.

Enable HTTP in the configs as shown below, restart the game, then try running the pastebin get command again:
.minecraft/saves/[your world name]/serverconfig/computercraft-server.toml

[http]
	#Enable the "http" API on Computers (see "rules" for more fine grained control than this).
	enabled = true
	#Enable use of http websockets. This requires the "http_enable" option to also be true.
	websocket_enabled = true

That worked !!!! Thank you !!
Just for others that may have this issue...I play on an Akliz Server I downloaded the file from the server via filezilla and made the above adjustments to the "serverconfig/computercraft-server.toml" in the world folder.

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