diff --git a/example/ios/Podfile b/example/ios/Podfile
index 325e1972b..c2feba335 100644
--- a/example/ios/Podfile
+++ b/example/ios/Podfile
@@ -42,5 +42,11 @@ end
 post_install do |installer|
   installer.pods_project.targets.each do |target|
     flutter_additional_ios_build_settings(target)
+    # Temporary exclude simulator arm64 to allow run app on simulator
+    # https://developer.apple.com/forums/thread/656509
+    target.build_configurations.each do |config|
+      config.build_settings['ONLY_ACTIVE_ARCH'] = 'YES'
+      config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "i386 arm64"
+    end
   end
 end
diff --git a/ios/Classes/Base/BeanCovertor.swift b/ios/Classes/Base/BeanCovertor.swift
index 80220d94b..2578b18a4 100644
--- a/ios/Classes/Base/BeanCovertor.swift
+++ b/ios/Classes/Base/BeanCovertor.swift
@@ -360,7 +360,7 @@ func mapToEncryptionConfig(_ map: [String: Any]) -> AgoraEncryptionConfig {
         var encryptionKdfSalt: [UInt8] = []
         for i in list.indices {
             if let item = list[i] as? NSNumber {
-                encryptionKdfSalt[i] = item.uint8Value
+                encryptionKdfSalt.append(item.uint8Value)
             }
         }
         config.encryptionKdfSalt = Data(bytes: encryptionKdfSalt)
diff --git a/ios/Classes/Base/RtcEngine.swift b/ios/Classes/Base/RtcEngine.swift
index 809db652c..4b7f379e0 100644
--- a/ios/Classes/Base/RtcEngine.swift
+++ b/ios/Classes/Base/RtcEngine.swift
@@ -186,13 +186,13 @@ protocol RtcEngineAudioMixingInterface {
     func setAudioMixingPosition(_ params: NSDictionary, _ callback: Callback)
 
     func setAudioMixingPitch(_ params: NSDictionary, _ callback: Callback)
-    
+
     func setAudioMixingPlaybackSpeed(_ params: NSDictionary, _ callback: Callback)
-    
+
     func getAudioTrackCount(_ callback: Callback)
-    
+
     func selectAudioTrack(_ params: NSDictionary, _ callback: Callback)
-    
+
     func setAudioMixingDualMonoMode(_ params: NSDictionary, _ callback: Callback)
 }