Use specific exception for not found node.

src/main/java/com/onarandombox/MultiverseCore/commands/ConfigCommand.java

@@ -1,6 +1,5 @@
 package com.onarandombox.MultiverseCore.commands;
 
-import co.aikar.commands.BukkitCommandIssuer;
 import co.aikar.commands.annotation.CommandAlias;
 import co.aikar.commands.annotation.CommandCompletion;
 import co.aikar.commands.annotation.CommandPermission;
@@ -9,10 +8,12 @@ import co.aikar.commands.annotation.Optional;
 import co.aikar.commands.annotation.Single;
 import co.aikar.commands.annotation.Subcommand;
 import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandIssuer;
 import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
 import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
 import com.onarandombox.MultiverseCore.commandtools.context.MVConfigValue;
 import com.onarandombox.MultiverseCore.config.MVCoreConfig;
+import com.onarandombox.MultiverseCore.exceptions.MultiverseException;
 import jakarta.inject.Inject;
 import org.jetbrains.annotations.NotNull;
 import org.jvnet.hk2.annotations.Service;
@@ -34,7 +35,7 @@ public class ConfigCommand extends MultiverseCommand {
     @CommandCompletion("@mvconfigs")
     @Syntax("<name> [new-value]")
     @Description("") //TODO
-    public void onConfigCommand(BukkitCommandIssuer issuer,
+    public void onConfigCommand(MVCommandIssuer issuer,
 
                                 @Syntax("<name>")
                                 @Description("") //TODO
@@ -53,18 +54,26 @@ public class ConfigCommand extends MultiverseCommand {
         updateConfigValue(issuer, name, value.getValue());
     }
 
-    private void showConfigValue(BukkitCommandIssuer issuer, String name) {
+    private void showConfigValue(MVCommandIssuer issuer, String name) {
         config.getProperty(name)
                 .onSuccess(value -> issuer.sendMessage(name + "is currently set to " + value))
                 .onFailure(e -> issuer.sendMessage("Unable to get " + name + ": " + e.getMessage()));
     }
 
-    private void updateConfigValue(BukkitCommandIssuer issuer, String name, Object value) {
+    private void updateConfigValue(MVCommandIssuer issuer, String name, Object value) {
         config.setProperty(name, value)
                 .onSuccess(ignore -> {
                     config.save();
                     issuer.sendMessage("Successfully set " + name + " to " + value);
                 })
-                .onFailure(e -> issuer.sendMessage("Unable to set " + name + " to " + value + ": " + e.getMessage()));
+                .onFailure(e -> {
+                    issuer.sendMessage("Unable to set " + name + " to " + value + ".");
+                    if (e instanceof MultiverseException) {
+                        var message = ((MultiverseException) e).getMVMessage();
+                        if (message != null) {
+                            issuer.sendError(message);
+                        }
+                    }
+                });
     }
 }

src/main/java/com/onarandombox/MultiverseCore/configuration/handle/FileConfigHandle.java

@@ -7,8 +7,10 @@ import java.util.logging.Logger;
 
 import com.dumptruckman.minecraft.util.Logging;
 import com.onarandombox.MultiverseCore.configuration.migration.ConfigMigrator;
+import com.onarandombox.MultiverseCore.configuration.node.ConfigNodeNotFoundException;
 import com.onarandombox.MultiverseCore.configuration.node.NodeGroup;
 import com.onarandombox.MultiverseCore.configuration.node.ValueNode;
+import com.onarandombox.MultiverseCore.exceptions.MultiverseException;
 import io.vavr.control.Try;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.plugin.Plugin;
@@ -127,7 +129,7 @@ abstract class FileConfigHandle<C extends FileConfiguration> {
      */
     public Try<Object> get(@Nullable String name) {
         return nodes.findNode(name, ValueNode.class)
-                .toTry(() -> new Exception("Node not found"))
+                .toTry(() -> new ConfigNodeNotFoundException(name))
                 .map(node -> get((ValueNode<Object>) node));
     }
 
@@ -150,7 +152,7 @@ abstract class FileConfigHandle<C extends FileConfiguration> {
      */
     public Try<Void> set(@Nullable String name, Object value) {
         return nodes.findNode(name, ValueNode.class)
-                .toTry(() -> new Exception("Node not found"))
+                .toTry(() -> new ConfigNodeNotFoundException(name))
                 .flatMap(node -> set(node, value));
     }
 
@@ -164,7 +166,7 @@ abstract class FileConfigHandle<C extends FileConfiguration> {
      */
     public <T> Try<Void> set(@NotNull ValueNode<T> node, T value) {
         if (!node.validate(value)) {
-            return Try.failure(new Exception("Validation failed"));
+            return Try.failure(new MultiverseException("Validation failed", null)); // TODO replace validation
         }
         T oldValue = get(node);
         config.set(node.getPath(), value);

src/main/java/com/onarandombox/MultiverseCore/configuration/node/ConfigNodeNotFoundException.java

@@ -0,0 +1,14 @@
+package com.onarandombox.MultiverseCore.configuration.node;
+
+import com.onarandombox.MultiverseCore.exceptions.MultiverseException;
+import org.jetbrains.annotations.Nullable;
+
+import static com.onarandombox.MultiverseCore.utils.MVCorei18n.CONFIG_NODE_NOTFOUND;
+import static com.onarandombox.MultiverseCore.utils.message.MessageReplacement.replace;
+
+public class ConfigNodeNotFoundException extends MultiverseException {
+
+    public ConfigNodeNotFoundException(@Nullable String nodeName) {
+        super(CONFIG_NODE_NOTFOUND.bundle("Config node not found: {node}", replace("{node}").with(nodeName)), null);
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/utils/MVCorei18n.java

@@ -9,6 +9,7 @@ import org.jetbrains.annotations.NotNull;
 public enum MVCorei18n implements MessageKeyProvider {
     // config status
     CONFIG_SAVE_FAILED,
+    CONFIG_NODE_NOTFOUND,
 
     // check command
     CHECK_CHECKING,

src/main/resources/multiverse-core_en.properties

@@ -1,5 +1,6 @@
 # configuration
 mv-core.config.save.failed=Unable to save Multiverse-Core config.yml. Your changes will be temporary!
+mv-core.config.node.notfound=Node not found in config: {node}
 
 # /mv check
 mv-core.check.description=Checks if a player can teleport to a destination.
@@ -113,4 +114,3 @@ mv-core.unload.success=&aUnloaded world '{world}'!
 
 # /mv usage
 mv-core.usage.description=Show Multiverse-Core command usage.
-