优化

app/src/main/java/io/legado/app/App.kt

@@ -216,4 +216,12 @@ class App : Application() {
         }
     }
 
+    companion object {
+        init {
+            if (BuildConfig.DEBUG) {
+                System.setProperty("kotlinx.coroutines.debug", "on")
+            }
+        }
+    }
+
 }

app/src/main/java/io/legado/app/model/ReadManga.kt

@@ -206,7 +206,7 @@ object ReadManga : CoroutineScope by MainScope() {
                     mCallback?.loadFail(errorMsg)
                     return
                 }
-                if (content.isEmpty()) {
+                if (content.isEmpty() && !chapter.isVolume) {
                     mCallback?.loadFail("正文内容为空")
                     return
                 }