diff --git a/app/src/main/java/io/legado/app/constant/AppLog.kt b/app/src/main/java/io/legado/app/constant/AppLog.kt
index c20e64dd4..c5c887274 100644
--- a/app/src/main/java/io/legado/app/constant/AppLog.kt
+++ b/app/src/main/java/io/legado/app/constant/AppLog.kt
@@ -2,15 +2,17 @@ package io.legado.app.constant
 
 object AppLog {
 
-    val logs = arrayListOf<Triple<Long, String, Throwable?>>()
+    private val mLogs = arrayListOf<Triple<Long, String, Throwable?>>()
+
+    val logs get() = mLogs.toList()
 
     @Synchronized
     fun put(message: String?, throwable: Throwable? = null) {
         message ?: return
-        if (logs.size > 100) {
-            logs.removeLastOrNull()
+        if (mLogs.size > 100) {
+            mLogs.removeLastOrNull()
         }
-        logs.add(0, Triple(System.currentTimeMillis(), message, throwable))
+        mLogs.add(0, Triple(System.currentTimeMillis(), message, throwable))
     }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/storage/AppWebDav.kt b/app/src/main/java/io/legado/app/help/storage/AppWebDav.kt
index fbbda5380..ca254b371 100644
--- a/app/src/main/java/io/legado/app/help/storage/AppWebDav.kt
+++ b/app/src/main/java/io/legado/app/help/storage/AppWebDav.kt
@@ -7,6 +7,7 @@ import io.legado.app.R
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookProgress
+import io.legado.app.help.AppConfig
 import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.lib.dialogs.selector
 import io.legado.app.lib.webdav.HttpAuth
@@ -143,6 +144,7 @@ object AppWebDav {
     }
 
     fun uploadBookProgress(book: Book) {
+        if (!AppConfig.syncBookProgress) return
         if (!NetworkUtils.isAvailable()) return
         Coroutine.async {
             val bookProgress = BookProgress(book)
@@ -159,8 +161,10 @@ object AppWebDav {
             val url = getProgressUrl(book)
             WebDav(url).download()?.let { byteArray ->
                 val json = String(byteArray)
-                GSON.fromJsonObject<BookProgress>(json)?.let {
-                    return it
+                if (json.isJson()) {
+                    GSON.fromJsonObject<BookProgress>(json)?.let {
+                        return it
+                    }
                 }
             }
         }
diff --git a/app/src/main/java/io/legado/app/model/ReadBook.kt b/app/src/main/java/io/legado/app/model/ReadBook.kt
index df0d2014d..e7d105bad 100644
--- a/app/src/main/java/io/legado/app/model/ReadBook.kt
+++ b/app/src/main/java/io/legado/app/model/ReadBook.kt
@@ -95,11 +95,9 @@ object ReadBook : CoroutineScope by MainScope() {
         nextTextChapter = null
     }
 
-    fun uploadProgress(syncBookProgress: Boolean = AppConfig.syncBookProgress) {
-        if (syncBookProgress) {
-            book?.let {
-                AppWebDav.uploadBookProgress(it)
-            }
+    fun uploadProgress() {
+        book?.let {
+            AppWebDav.uploadBookProgress(it)
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
index d233148f6..d5f016c18 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
@@ -148,10 +148,9 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
 
     fun syncBookProgress(
         book: Book,
-        syncBookProgress: Boolean = AppConfig.syncBookProgress,
         alertSync: ((progress: BookProgress) -> Unit)? = null
     ) {
-        if (syncBookProgress)
+        if (AppConfig.syncBookProgress)
             execute {
                 AppWebDav.getBookProgress(book)
             }.onSuccess {
diff --git a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
index 8d5e1224a..b98ba0c66 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
@@ -127,7 +127,7 @@ class MainViewModel(application: Application) : BaseViewModel(application) {
             addDownload(source, book)
         }.onError(upTocPool) {
             AppLog.put("${book.name} 更新目录失败\n${it.localizedMessage}", it)
-            Timber.e(it)
+            Timber.e(it, "${book.name} 更新目录失败")
         }.onCancel(upTocPool) {
             upTocCancel(book.bookUrl)
         }.onFinally(upTocPool) {
diff --git a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
index be364818e..260de8d44 100644
--- a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
@@ -35,6 +35,7 @@ open class WelcomeActivity : BaseActivity<ActivityWelcomeBinding>() {
 
     private fun init() {
         Coroutine.async {
+            if (!AppConfig.syncBookProgress) return@async
             val books = appDb.bookDao.all
             books.forEach { book ->
                 AppWebDav.getBookProgress(book)?.let { bookProgress ->