lastFailureMessage is val, not var

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/content/UploadContentWorker.kt

@@ -48,7 +48,7 @@ internal class UploadContentWorker(context: Context, params: WorkerParameters) :
             val event: Event,
             val attachment: ContentAttachmentData,
             val isRoomEncrypted: Boolean,
-            override var lastFailureMessage: String? = null
+            override val lastFailureMessage: String? = null
     ) : SessionWorkerParams
 
     @Inject lateinit var fileUploader: FileUploader

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/group/GetGroupDataWorker.kt

@@ -32,7 +32,7 @@ internal class GetGroupDataWorker(context: Context, params: WorkerParameters) :
     internal data class Params(
             override val userId: String,
             val groupIds: List<String>,
-            override var lastFailureMessage: String? = null
+            override val lastFailureMessage: String? = null
     ) : SessionWorkerParams
 
     @Inject lateinit var getGroupDataTask: GetGroupDataTask

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/relation/SendRelationWorker.kt

@@ -40,7 +40,7 @@ internal class SendRelationWorker(context: Context, params: WorkerParameters) :
             val roomId: String,
             val event: Event,
             val relationType: String? = null,
-            override var lastFailureMessage: String?
+            override val lastFailureMessage: String?
     ) : SessionWorkerParams
 
     @Inject lateinit var roomAPI: RoomAPI

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/send/EncryptEventWorker.kt

@@ -42,7 +42,7 @@ internal class EncryptEventWorker(context: Context, params: WorkerParameters)
             val event: Event,
             /**Do not encrypt these keys, keep them as is in encrypted content (e.g. m.relates_to)*/
             val keepKeys: List<String>? = null,
-            override var lastFailureMessage: String? = null
+            override val lastFailureMessage: String? = null
     ) : SessionWorkerParams
 
     @Inject lateinit var crypto: CryptoService

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/send/RedactEventWorker.kt

@@ -36,7 +36,7 @@ internal class RedactEventWorker(context: Context, params: WorkerParameters) : C
             val roomId: String,
             val eventId: String,
             val reason: String?,
-            override var lastFailureMessage: String? = null
+            override val lastFailureMessage: String? = null
     ) : SessionWorkerParams
 
     @Inject lateinit var roomAPI: RoomAPI

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/send/SendEventWorker.kt

@@ -39,7 +39,7 @@ internal class SendEventWorker constructor(context: Context, params: WorkerParam
             override val userId: String,
             val roomId: String,
             val event: Event,
-            override var lastFailureMessage: String? = null
+            override val lastFailureMessage: String? = null
     ) : SessionWorkerParams
 
     @Inject lateinit var localEchoUpdater: LocalEchoUpdater

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/worker/SessionWorkerParams.kt

@@ -20,5 +20,5 @@ interface SessionWorkerParams {
     val userId: String
 
     // Null is no error occurs. When chaining Workers, first step is to check that there is no lastFailureMessage from the previous workers
-    var lastFailureMessage: String?
+    val lastFailureMessage: String?
 }