diff --git a/app/src/main/java/io/legado/app/base/BaseViewModel.kt b/app/src/main/java/io/legado/app/base/BaseViewModel.kt
index 655cd7097..e14fa7a3d 100644
--- a/app/src/main/java/io/legado/app/base/BaseViewModel.kt
+++ b/app/src/main/java/io/legado/app/base/BaseViewModel.kt
@@ -24,4 +24,8 @@ open class BaseViewModel(application: Application) : AndroidViewModel(applicatio
         super.onCleared()
         cancel()
     }
+
+    open fun toast(message: Int) {
+
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt b/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt
index c345cccbc..6b023c7a0 100644
--- a/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt
@@ -5,12 +5,14 @@ import android.content.Intent
 import androidx.lifecycle.MediatorLiveData
 import androidx.lifecycle.MutableLiveData
 import io.legado.app.App
+import io.legado.app.R
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.BookSource
 import io.legado.app.help.BookHelp
 import io.legado.app.model.WebBook
+import io.legado.app.utils.toast
 import kotlinx.coroutines.Dispatchers.IO
 
 class ReadBookViewModel(application: Application) : BaseViewModel(application) {
@@ -44,10 +46,8 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
 
                                 }
                             }?.onError {
-
-                            } ?: let {
-
-                        }
+                                getApplication<App>().toast(R.string.load_toc_error)
+                            } ?: autoChangeSource()
                     } else {
                         chapterMaxIndex.postValue(count)
                     }
@@ -78,6 +78,9 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
             }
     }
 
+    private fun autoChangeSource() {
+
+    }
 
     interface CallBack {
         fun loadContentFinish(bookChapter: BookChapter, content: String)
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 6caf136b6..51172e3ed 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -474,4 +474,5 @@
     <string name="dsm_start"><![CDATA[<]]></string>
     <string name="dsm_end"><![CDATA[>]]></string>
     <string name="reading">阅读</string>
+    <string name="load_toc_error">加载目录失败</string>
 </resources>