diff --git a/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt b/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt
index 2b60cf0..82c76dc 100644
--- a/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt
+++ b/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt
@@ -406,10 +406,10 @@ class ApngDecoder {
                                     body.addAll(Utils.IDAT.asList())
                                     // Get image bytes
                                     body.addAll(
-                                        byteArray.slice(
-                                            i + 4..
+                                        byteArray.copyOfRange(
+                                            i + 4,
                                             i + 4 + bodySize
-                                        )
+                                        ).asList()
                                     )
                                     val crC32 = CRC32()
                                     crC32.update(body.toByteArray(), 0, body.size)
diff --git a/app-test/src/main/java/oupson/apngcreator/activities/CreatorActivity.kt b/app-test/src/main/java/oupson/apngcreator/activities/CreatorActivity.kt
index 218837f..1f7250b 100644
--- a/app-test/src/main/java/oupson/apngcreator/activities/CreatorActivity.kt
+++ b/app-test/src/main/java/oupson/apngcreator/activities/CreatorActivity.kt
@@ -375,7 +375,7 @@ class CreatorActivity : AppCompatActivity() {
             }
         }
 
-        runCatching {
+        runCatching { // TODO
             encoder.writeEnd()
         }