java.lang.NoClassDefFoundError

[FernandoCCNunes]

I'm having this error as soon as the activity launches and the function startCameraPreview() is called, do you have some idea how can I fix this? I have tried to fork the project but no luck there, having a issue with state.properties not being found or something Any help is appreciated.

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/camera/core/PreviewConfig$Builder; at com.netguru.arlocalizerview.arview.ARLocalizerView.startCameraPreview(ARLocalizerView.kt:105) at com.netguru.arlocalizerview.arview.ARLocalizerView.access$startCameraPreview(ARLocalizerView.kt:30) at com.netguru.arlocalizerview.arview.ARLocalizerView$checkPermissions$1$1.run(ARLocalizerView.kt:89) at android.os.Handler.handleCallback(Handler.java:914) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:224) at android.app.ActivityThread.main(ActivityThread.java:7560) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950) Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.camera.core.PreviewConfig$Builder" on path: DexPathList[[zip file "/data/app/pt.tetrapi.cmvf.explore-KFNovvFzI1pwYhY_vK34-g==/base.apk"],nativeLibraryDirectories=[/data/app/pt.tetrapi.cmvf.explore-KFNovvFzI1pwYhY_vK34-g==/lib/arm64, /system/lib64, /system/product/lib64]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:230) at java.lang.ClassLoader.loadClass(ClassLoader.java:379) at java.lang.ClassLoader.loadClass(ClassLoader.java:312) at com.netguru.arlocalizerview.arview.ARLocalizerView.startCameraPreview(ARLocalizerView.kt:105)  at com.netguru.arlocalizerview.arview.ARLocalizerView.access$startCameraPreview(ARLocalizerView.kt:30)  at com.netguru.arlocalizerview.arview.ARLocalizerView$checkPermissions$1$1.run(ARLocalizerView.kt:89)  at android.os.Handler.handleCallback(Handler.java:914)  at android.os.Handler.dispatchMessage(Handler.java:100)  at android.os.Looper.loop(Looper.java:224)  at android.app.ActivityThread.main(ActivityThread.java:7560)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)  I/Process: Sending signal. PID: 14119 SIG: 9