No. All whitelisted mods are listed here: https://redlime.github.io/MCSRMods/
Go to the files of where the Minecraft Launcher are stored and go the "game" folder (C:\Program Files (x86)\Minecraft Launcher\game) and delete JavaCheck.jar. You will have to do this every time the launcher updates
The use of commands are banned. What are you trying to accomplish here?
The FULL error log. Not just one line - that doesn't help me. There should be a "copy error message" button in the error window. Paste that into here
fabric error cuz the set spawn mod What is the error?
All legal mods for Minecraft Speedrunning are listed here -> https://redlime.github.io/MCSRMods/
SpeedrunIGT is a mod that is run in the game itself, you don't open it as a separate application, unlike ninjabrainbot
Don't get me wrong, whilst it is an "interesting" seed, all SSG runners care about are obsidian, beds, a pickaxe and for terrain features, a short running distance, nice nether terrain, 12 eye stronghold and a nice end that is capable of having a quick dragon perch. This seed contains none of that.
SpeedrunIGT requires Fabric loader. If you use Fabric don't install the Fabric API as that'll invalidate your run. You can use the follow mods listed here to improve your runs: https://redlime.github.io/MCSRMods/ (Note that these are the only valid mods used in mcsr, and is dependent on your version) And using SpeedrunIGT does make your run modded