diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/VersionList.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/VersionList.java
index 4f2378566..647dec2a3 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/VersionList.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/VersionList.java
@@ -86,7 +86,7 @@ public abstract class VersionList<T extends RemoteVersion> {
     }
 
     public Task<?> loadAsync(String gameVersion) {
-        return Task.composeAsync(() -> {
+        return Task.composeAsync(null, () -> {
             lock.readLock().lock();
             boolean loaded;
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/CancellableTaskExecutor.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/CancellableTaskExecutor.java
index cfe9f1539..ad7e076c0 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/CancellableTaskExecutor.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/CancellableTaskExecutor.java
@@ -143,7 +143,7 @@ public class CancellableTaskExecutor extends TaskExecutor {
                     .findAny().orElse(null);
             if (!doDependentsSucceeded && task.isRelyingOnDependents() || cancelled.get()) {
                 task.setException(dependentsException);
-                throw new CancellationException();
+                throw new ExecutionException(dependentsException);
             }
 
             if (doDependentsSucceeded)
@@ -183,7 +183,7 @@ public class CancellableTaskExecutor extends TaskExecutor {
             if (!doDependenciesSucceeded && task.isRelyingOnDependencies()) {
                 Logging.LOG.severe("Subtasks failed for " + task.getName());
                 task.setException(dependenciesException);
-                throw new CancellationException();
+                throw new ExecutionException(dependenciesException);
             }
 
             flag = true;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java
index cf0236f6e..14ce4a34f 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java
@@ -211,7 +211,7 @@ public class FileDownloadTask extends Task<Void> {
         Exception exception = null;
 
         for (int repeat = 0; repeat < retry * urls.size(); repeat++) {
-            URL url = urls.get(repeat / urls.size());
+            URL url = urls.get(repeat / retry);
             if (isCancelled()) {
                 break;
             }