Hi,
i tried to play the Downfall v3.0.33 mod as i heard quite some nice stuff about it . I got the 3 Mods needed for it too (ModTheSpire v3.20, BaseModv. 5.32.3, StSlibv 1.23.0).
Sadly when i start The Game via Modthespire, it shows evry mods and they got a green check mark behind the 3, but when i try to run it the following report appeares:

(...)
Injecting patches...Done.
Compiling patched classes...
java.lang.NullPointerException
at javassist.util.proxy.SecurityActions.setAccessible(SecurityActions.java:103)
at javassist.util.proxy.DefineClassHelper.toClass3(DefineClassHelper.java:151)
at javassist.util.proxy.DefineClassHelper.toClass2(DefineClassHelper.java:134)
at javassist.util.proxy.DefineClassHelper.toClass(DefineClassHelper.java:95)
at javassist.ClassPool.toClass(ClassPool.java:1143)
at javassist.CtClass.toClass(CtClass.java:1316)
at com.evacipated.cardcrawl.modthespire.Patcher.compilePatches(Patcher.java:317)
at com.evacipated.cardcrawl.modthespire.Loader.runMods(Loader.java:393)
at com.evacipated.cardcrawl.modthespire.ui.ModSelectWindow.lambda$null$1(ModSelectWindow.java:273)
at java.base/java.lang.Thread.run(Thread.java:834)

Can anyone help or give a tip on what to do ? (restarting PC and reinstalling has been done already)