still trying to fix it

mobile/app/build.gradle.kts

@@ -17,7 +17,16 @@ android {
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
-    
+
+    applicationVariants.all {
+        this.outputs
+            .map { it as com.android.build.gradle.internal.api.ApkVariantOutputImpl }
+            .forEach { output ->
+                var apkName = "com.odweta.solon_" + this.versionName + ".apk"
+                output.outputFileName = apkName
+            }
+    }
+
     buildTypes {
         release {
             isMinifyEnabled = false
@@ -25,13 +34,6 @@ android {
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
             )
-            applicationVariants.all { variant ->
-                variant.outputs.all { output ->
-                    val versionName = variant.versionName
-                    val fileName = "com.odweta.solon_$versionName.apk"
-                    output.outputFileName = fileName
-                }
-            } 
         }
     }
     compileOptions {