Fix:Stream sync make sure server url and token exist

android/app/build.gradle

@@ -13,7 +13,7 @@ android {
         applicationId "com.audiobookshelf.app"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 54
+        versionCode 55
         versionName "0.9.35-beta"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         aaptOptions {

android/app/src/main/java/com/audiobookshelf/app/AudiobookProgressSyncer.kt

@@ -111,6 +111,10 @@ class AudiobookProgressSyncer constructor(playerNotificationService:PlayerNotifi
     var serverUrl = playerNotificationService.getServerUrl()
     var token = playerNotificationService.getUserToken()
 
+    if (serverUrl == "" || token == "") {
+      return
+    }
+
     Log.d(tag, "Sync Stream $serverUrl | $token")
     var url = "$serverUrl/api/syncStream"