diff --git a/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt b/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt
index 7a8449cdb..883e8d854 100644
--- a/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt
+++ b/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.kt
@@ -15,6 +15,7 @@
  */
 package com.hippo.ehviewer.client
 
+import android.util.Log
 import com.hippo.ehviewer.EhApplication.Companion.nonCacheOkHttpClient
 import com.hippo.ehviewer.EhApplication.Companion.okHttpClient
 import kotlinx.coroutines.coroutineScope
@@ -57,17 +58,39 @@ fun jsonArrayOf(vararg element: Any?) = JSONArray().apply { element.forEach { pu
 inline fun Request.Builder.jsonBody(builder: JSONObject.() -> Unit) = post(JSONObject().apply(builder).toString().toRequestBody(MEDIA_TYPE_JSON))
 
 suspend inline fun <R> Call.usingCancellable(crossinline block: Response.() -> R): R = executeAsync().use {
+    val call = this
+    Log.d("usingCancellable", "Dispatching call$call")
     coroutineScope {
-        suspendCancellableCoroutine { cont ->
+        suspendCancellableCoroutine<R> { cont ->
             launch {
-                val r = runCatching { block(it) }
+                val r = runCatching {
+                    Log.d("usingCancellable", "Reading call$call")
+                    block(it)
+                }
                 if (!isCanceled() && cont.isActive) {
-                    r.exceptionOrNull()?.let { cont.resumeWithException(it) }
-                    r.getOrNull()?.let { cont.resume(it) }
+                    r.exceptionOrNull()?.let {
+                        Log.e("usingCancellable", "Processing call$call failed!")
+                        cont.resumeWithException(it)
+                    }
+                    r.getOrNull()?.let {
+                        Log.d("usingCancellable", "Processing call$call succeed!")
+                        cont.resume(it)
+                    }
+                } else if (isCanceled() && cont.isActive) {
+                    Log.e("usingCancellable", "call$call cancelled but coroutine is Active!")
+                } else if (!isCanceled() && !cont.isActive) {
+                    Log.e("usingCancellable", "call$call not cancelled but coroutine is Dead!")
+                } else {
+                    Log.d("usingCancellable", "Cancelled reading call$call")
                 }
             }
-            cont.invokeOnCancellation { cancel() }
+            cont.invokeOnCancellation {
+                Log.d("usingCancellable", "Cancelling call$call")
+                cancel()
+            }
         }
+    }.apply {
+        Log.d("usingCancellable", "Processing call$call finished!")
     }
 }
 
diff --git a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt
index 9ff0dcf2d..3380916f6 100644
--- a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt
+++ b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt
@@ -34,7 +34,6 @@ import com.hippo.ehviewer.util.sendTo
 import com.hippo.ehviewer.yorozuya.FileUtils
 import com.hippo.unifile.UniFile
 import com.hippo.unifile.openOutputStream
-import moe.tarsin.coroutines.runSuspendCatching
 import okhttp3.Response
 import okio.buffer
 import okio.sink
@@ -166,27 +165,19 @@ class SpiderDen(private val mGalleryInfo: GalleryInfo) {
             return ret
         }
 
-        findDownloadFileForIndex(index, extension)?.runSuspendCatching {
+        findDownloadFileForIndex(index, extension)?.run {
             return doSave(this) == length
-        }?.onFailure {
-            it.printStackTrace()
-            return false
         }
 
         // Read Mode, allow save to cache
         if (mode == SpiderQueen.MODE_READ) {
             val key = getImageKey(mGid, index)
             var received: Long = 0
-            runSuspendCatching {
-                sCache.edit(key) {
-                    metadata.toFile().writeText(extension)
-                    received = doSave(UniFile.fromFile(data.toFile())!!)
-                }
-            }.onFailure {
-                it.printStackTrace()
-            }.onSuccess {
-                return received == length
+            sCache.edit(key) {
+                metadata.toFile().writeText(extension)
+                received = doSave(UniFile.fromFile(data.toFile())!!)
             }
+            return received == length
         }
 
         return false