my game wont load mods idk why and what is causing it this is the error

java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy3.clz(Unknown Source)
at com.evacipated.cardcrawl.modthespire.Patcher.injectPatches(Patcher.java:296)
at com.evacipated.cardcrawl.modthespire.Patcher.injectPatches(Patcher.java:269)
at com.evacipated.cardcrawl.modthespire.Loader.runMods(Loader.java:359)
at com.evacipated.cardcrawl.modthespire.ui.ModSelectWindow.lambda$null$1(ModSelectWindow.java:269)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: com.megacrit.cardcrawl.vfx.DamageHeartEffect
at com.evacipated.cardcrawl.modthespire.MTSClassLoader.findClass(MTSClassLoader.java:88)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.evacipated.cardcrawl.modthespire.MTSClassLoader.loadClass(MTSClassLoader.java:72)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at javassist.bytecode.annotation.MemberValue.loadClass(MemberValue.java:56)
at javassist.bytecode.annotation.ClassMemberValue.getValue(ClassMemberValue.java:89)
at javassist.bytecode.annotation.AnnotationImpl.invoke(AnnotationImpl.java:151)