Class ref in pre-verified class resolved to unexpected implementation

Question

I am using Android Studio and developing an Xposed Framework module. The majority of my users can use my application just fine, however two of them have an issue, which is pasted below. I have done some searching and attempts at fixing it (removing duplicate classes, changing the jar library my application needs from 'compiled' to 'provided') and no luck. It's difficult for me to debug this as well as I cannot reproduce the issue the users are experiencing. How can I resolve this issue?

java.lang.IllegalAccessError: Class ref in pre-verified class resolved to unexpected implementation 
    at dalvik.system.DexFile.defineClassNative(Native Method) 
    at dalvik.system.DexFile.defineClass(DexFile.java:222) 
    at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:215) 
    at dalvik.system.DexPathList.findClass(DexPathList.java:322) 
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:497) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:457) 
    at de.robv.android.xposed.XposedBridge.loadModule(XposedBridge.java:421) 
    at de.robv.android.xposed.XposedBridge.loadModules(XposedBridge.java:386) 
    at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:120) 
    at dalvik.system.NativeStart.main(Native Method)

Answer 1

open module settings - app - dependencies

change the xposed*.jar scope to provided