Minecraft and Mod Version: Minecraft: 1.16.4

Forge: 35.1.37

Screenshot To Clipboard mod version: 1.15.1-1.0.5

Description:
Red "X" on a server in the multiplayer menu with the tooltip "Incompatible FML modded server" when the server is not running the Screenshot To Clipboard mod. This doesn't make sense to me because I thought Screenshot To Clipboard was a client mod. Most other client side mods don't have this issue. You are still able to join the server and play so the red "X" is confusing.

Steps to Reproduce:

1. Run server without the mod, run client with the mod
2. Look at server in multiplayer menu and see the red "X" with tooltip

Crash logs or other info:
Image: https://imgur.com/Y4VIyEr

From the client log file:

[B#625] 2021/04/14 16:27:21 [INFO] [16:27:21.281] [Netty Client IO #0/INFO] [client.ClientHooks/CLIENTHOOKS]: Client has mods that are missing on server: [screenshotclipboard]