When i login, app crashes.

[Feelthewind]

await FlutterNaverLogin.logIn(); => App crashes. Do you have any idea why this happens? Thanks.

E/AndroidRuntime(21523): FATAL EXCEPTION: main E/AndroidRuntime(21523): Process: com.example.naver_login_test, PID: 21523 E/AndroidRuntime(21523): java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v7/appcompat/R$style; E/AndroidRuntime(21523): at com.nhn.android.naverlogin.ui.OAuthLoginDialogMng.showProgressDlg(OAuthLoginDialogMng.java:35) E/AndroidRuntime(21523): at com.nhn.android.naverlogin.ui.OAuthLoginActivity$GetAccessTokenTask.onPreExecute(OAuthLoginActivity.java:412) E/AndroidRuntime(21523): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:648) E/AndroidRuntime(21523): at android.os.AsyncTask.execute(AsyncTask.java:595) E/AndroidRuntime(21523): at com.nhn.android.naverlogin.ui.OAuthLoginActivity.onActivityResult(OAuthLoginActivity.java:403) E/AndroidRuntime(21523): at android.app.Activity.dispatchActivityResult(Activity.java:7762) E/AndroidRuntime(21523): at android.app.ActivityThread.deliverResults(ActivityThread.java:4603) E/AndroidRuntime(21523): at android.app.ActivityThread.handleSendResult(ActivityThread.java:4652) E/AndroidRuntime(21523): at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49) E/AndroidRuntime(21523): at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) E/AndroidRuntime(21523): at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) E/AndroidRuntime(21523): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1948) E/AndroidRuntime(21523): at android.os.Handler.dispatchMessage(Handler.java:106) E/AndroidRuntime(21523): at android.os.Looper.loop(Looper.java:214) E/AndroidRuntime(21523): at android.app.ActivityThread.main(ActivityThread.java:7050) E/AndroidRuntime(21523): at java.lang.reflect.Method.invoke(Native Method) E/AndroidRuntime(21523): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494) E/AndroidRuntime(21523): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965) E/AndroidRuntime(21523): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v7.appcompat.R$style" on path: DexPathList[[zip file "/data/app/com.example.naver_login_test-Yzb6gRLoRnPUdUCgOeLMIA==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.naver_login_test-Yzb6gRLoRnPUdUCgOeLMIA==/lib/arm64, /data/app/com.example.naver_login_test-Yzb6gRLoRnPUdUCgOeLMIA==/base.apk!/lib/arm64-v8a, /system/lib64, /system/vendor/lib64]] E/AndroidRuntime(21523): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134) E/AndroidRuntime(21523): at java.lang.ClassLoader.loadClass(ClassLoader.java:379) E/AndroidRuntime(21523): at java.lang.ClassLoader.loadClass(ClassLoader.java:312) E/AndroidRuntime(21523): ... 18 more I/Process (21523): Sending signal. PID: 21523 SIG: 9

[yoonjaepark]

Have you done the NAVER API settings?