The log file is incomplete. Make sure you follow the steps carefully:
Open Citra, then go to File>Open Citra Folder (Citra>Open Citra Folder if on MacOS) and open up the log folder. Now keep that open in the background.
Launch your game and encounter the problem; crash/slowdown/glitch and close citra if it doesn’t do so by itself. Do not restart citra as that will wipe the log of important information!
Redump your game by follwoing the guide carefully. Make sure you are using the latest version of GodMode9 and do not use any tools to decrypt your game. They will corrupt your games and there’s no need for them anyways.