Unable to use parts of Gameshark mod. I'm unable to open the Gameshark menu with either default Backspace or any other keys I reassign it to. It also give an Invalid arg message whenever I attempt to use a /gameshark arg.

Versions:
Pixelmon-7.1.1
Gameshark--6.0.3
Minecraft: 1.15.1
Forge-2838

Thanks for the report.

Is this in a single player environment, or a multiplayer one? If single player, make sure cheats are enabled for your world -- the mod requires those now.

(don't know the mod too well otherwise, keeping the status open)

It's in a Single Player environment with cheats enabled (tried with a clean save with the same problem). After a quick search it appears I'm not the only one with this problem as this recent Reddit post shows

Hello, you need to enable gameshark in your config folder
Then relog into your world and gameshark will work
also the command for gameshark is /gameshark reload to reload config
Edit : Also, for commands, only /gameshark reload work now, you need to config the sidemod with the config file