Fix a issue on release builds

android/app/build.gradle

@@ -71,6 +71,10 @@ android {
     buildTypes {
         release {
             signingConfig signingConfigs.release
+
+            useProguard true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+
         }
     }
 
@@ -85,6 +89,10 @@ android {
             applicationId "org.communiquons.beta"
         }
     }
+
+    packagingOptions {
+        exclude 'META-INF/proguard/androidx-annotations.pro'
+    }
 }
 
 flutter {

android/app/proguard-rules.pro

@@ -0,0 +1,3 @@
+## Flutter WebRTC
+-keep class com.cloudwebrtc.webrtc.** { *; }
+-keep class org.webrtc.** { *; }