diff --git a/app/src/main/java/de/robv/android/xposed/installer/installation/FlashCallback.java b/app/src/main/java/de/robv/android/xposed/installer/installation/FlashCallback.java
index d565766c7..44dd07bba 100644
--- a/app/src/main/java/de/robv/android/xposed/installer/installation/FlashCallback.java
+++ b/app/src/main/java/de/robv/android/xposed/installer/installation/FlashCallback.java
@@ -1,23 +1 @@
-package de.robv.android.xposed.installer.installation;
-
-import de.robv.android.xposed.installer.util.RootUtil;
-import eu.chainfire.libsuperuser.Shell;
-
-public interface FlashCallback extends RootUtil.LineCallback {
-    void onStarted();
-    void onDone();
-    void onError(int exitCode, String error);
-
-    int OK = 0;
-    int ERROR_GENERIC = 1;
-
-    // SU errors
-    int ERROR_TIMEOUT = Shell.OnCommandResultListener.WATCHDOG_EXIT;
-    int ERROR_SHELL_DIED = Shell.OnCommandResultListener.SHELL_DIED;
-    int ERROR_NO_ROOT_ACCESS = Shell.OnCommandResultListener.SHELL_EXEC_FAILED;
-
-    // ZIP errors
-    int ERROR_INVALID_ZIP = -100;
-    int ERROR_NOT_FLASHABLE_IN_APP = -101;
-    int ERROR_INSTALLER_NEEDS_UPDATE = -102;
-}
+npm install @paypal/react-paypal-js
\ No newline at end of file