Help with this error in WUP Installer GX2

I am trying to install a Wii game in the Wii U menu through WUP Installer GX2. I have already installed some games and everything was fine. But now I see this error: Not a game, game update, DLC

How to Hack Wii U Homebrew & Play Games on Wii U [Full Guide] - MiniTool Partition Wizard

How to Hack Wii U Homebrew & Play Games on Wii U [Full Guide] - MiniTool Partition Wizard

my Wii u roms aren't showing up in wup installer. do the files need to be wup and not wux? : r/Roms

Is it okay to download Wii U games on PC even if you don't own the game since they aren't being sold anymore? - Quora

Wii U keeps showing Error Message. (Downloading Games onto USB) - Imgur

USB loading is now possible on the Wii-U - Hackinformer

Fix Origin Error while playing games on Windows PC

Games de N64 convertidos para Wii U

Crashes/Installation Queue Stops on Error · Issue #2 · xhp-creations/WUP- Installer-GX2 · GitHub