Error opening mod after export

I exported one of my mods to create a structure and upon launching with the mod imported to a profile in curseforge, i got this error: 
java.lang.reflect.InvocationTargetException: null
already tried clearing gradle cache and reexporting, nothing changed (note i did export around 2 hours later as i had made some changes to the mod). right version (1.20.1), right forge version (47.2.0), here is the error log file given by minecraft.
https://pastebin.com/KZhGutYj
i dont know if im bad at modding, unable to read error codes, or its really complicated and i have a problem or something.