diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DownloadInfo.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DownloadInfo.java
index d6efe4859..c840ca842 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DownloadInfo.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DownloadInfo.java
@@ -22,6 +22,7 @@ import com.google.gson.annotations.SerializedName;
 import org.jackhuang.hmcl.util.Immutable;
 import org.jackhuang.hmcl.util.StringUtils;
 import org.jackhuang.hmcl.util.ToStringBuilder;
+import org.jackhuang.hmcl.util.gson.TolerableValidationException;
 import org.jackhuang.hmcl.util.gson.Validation;
 
 /**
@@ -74,8 +75,8 @@ public class DownloadInfo implements Validation {
     }
 
     @Override
-    public void validate() throws JsonParseException {
+    public void validate() throws JsonParseException, TolerableValidationException {
         if (StringUtils.isBlank(url))
-            throw new JsonParseException("DownloadInfo url can not be null");
+            throw new TolerableValidationException();
     }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/IdDownloadInfo.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/IdDownloadInfo.java
index 992245604..b79ca3757 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/IdDownloadInfo.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/IdDownloadInfo.java
@@ -21,6 +21,7 @@ import com.google.gson.JsonParseException;
 import com.google.gson.annotations.SerializedName;
 import org.jackhuang.hmcl.util.Immutable;
 import org.jackhuang.hmcl.util.StringUtils;
+import org.jackhuang.hmcl.util.gson.TolerableValidationException;
 
 /**
  *
@@ -54,7 +55,7 @@ public class IdDownloadInfo extends DownloadInfo {
     }
 
     @Override
-    public void validate() throws JsonParseException {
+    public void validate() throws JsonParseException, TolerableValidationException {
         super.validate();
 
         if (StringUtils.isBlank(id))
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LoggingInfo.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LoggingInfo.java
index ccd1ce1fe..dd359757b 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LoggingInfo.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LoggingInfo.java
@@ -20,6 +20,7 @@ package org.jackhuang.hmcl.game;
 import com.google.gson.JsonParseException;
 import com.google.gson.annotations.SerializedName;
 import org.jackhuang.hmcl.util.StringUtils;
+import org.jackhuang.hmcl.util.gson.TolerableValidationException;
 import org.jackhuang.hmcl.util.gson.Validation;
 
 /**
@@ -66,7 +67,7 @@ public final class LoggingInfo implements Validation {
     }
 
     @Override
-    public void validate() throws JsonParseException {
+    public void validate() throws JsonParseException, TolerableValidationException {
         file.validate();
         if (StringUtils.isBlank(argument))
             throw new JsonParseException("LoggingInfo.argument is empty.");
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/CircleDependencyException.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/TolerableValidationException.java
similarity index 61%
rename from HMCLCore/src/main/java/org/jackhuang/hmcl/game/CircleDependencyException.java
rename to HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/TolerableValidationException.java
index e56826e1f..d1146e67c 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/CircleDependencyException.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/TolerableValidationException.java
@@ -15,24 +15,15 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-package org.jackhuang.hmcl.game;
+package org.jackhuang.hmcl.util.gson;
 
 /**
- * What's circle dependency?
- * When C inherits from B, and B inherits from something else, and finally inherits from C again.
- *
- * @author huangyuhui
+ * This exception gets thrown by implementations of {@link Validation#validate()} if you want to replace
+ * the nullable JSON-parsed object which does not satisfy the constraint with null value.
+ * @see Validation
  */
-public final class CircleDependencyException extends GameException {
+public final class TolerableValidationException extends Exception {
 
-    public CircleDependencyException() {
-    }
-
-    public CircleDependencyException(String message) {
-        super(message);
-    }
-
-    public CircleDependencyException(String message, Throwable cause) {
-        super(message, cause);
+    public TolerableValidationException() {
     }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/Validation.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/Validation.java
index 951e1c52c..b987f8a38 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/Validation.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/Validation.java
@@ -36,5 +36,5 @@ public interface Validation {
      *
      * @throws JsonParseException if fields are filled in wrong format or wrong type.
      */
-    void validate() throws JsonParseException;
+    void validate() throws JsonParseException, TolerableValidationException;
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/ValidationTypeAdapterFactory.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/ValidationTypeAdapterFactory.java
index 2bcb49d3a..415ec84c5 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/ValidationTypeAdapterFactory.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/gson/ValidationTypeAdapterFactory.java
@@ -40,8 +40,13 @@ public final class ValidationTypeAdapterFactory implements TypeAdapterFactory {
         return new TypeAdapter<T>() {
             @Override
             public void write(JsonWriter writer, T t) throws IOException {
-                if (t instanceof Validation)
-                    ((Validation) t).validate();
+                if (t instanceof Validation) {
+                    try {
+                        ((Validation) t).validate();
+                    } catch (TolerableValidationException e) {
+                        delegate.write(writer, null);
+                    }
+                }
 
                 delegate.write(writer, t);
             }
@@ -49,8 +54,13 @@ public final class ValidationTypeAdapterFactory implements TypeAdapterFactory {
             @Override
             public T read(JsonReader reader) throws IOException {
                 T t = delegate.read(reader);
-                if (t instanceof Validation)
-                    ((Validation) t).validate();
+                if (t instanceof Validation) {
+                    try {
+                        ((Validation) t).validate();
+                    } catch (TolerableValidationException e) {
+                        return null;
+                    }
+                }
                 return t;
             }
         };