diff --git a/src/legacy/api/CommandAPI.cpp b/src/legacy/api/CommandAPI.cpp
index 2242bc28..c8826b0c 100644
--- a/src/legacy/api/CommandAPI.cpp
+++ b/src/legacy/api/CommandAPI.cpp
@@ -183,7 +183,7 @@ Local<Value> McClass::runcmd(const Arguments& args) {
     CATCH("Fail in RunCmd!")
 }
 
-I18n* getI18n(); // Stupid Mojang
+I18n& getI18n(); // Stupid Mojang
 
 Local<Value> McClass::runcmdEx(const Arguments& args) {
     CHECK_ARGS_COUNT(args, 1)
@@ -204,7 +204,7 @@ Local<Value> McClass::runcmdEx(const Arguments& args) {
             command->run(origin, output);
             for (auto msg : output.getMessages()) {
                 std::string temp;
-                getI18n()->getCurrentLanguage()->get(msg.getMessageId(), temp, msg.getParams());
+                getI18n().getCurrentLanguage()->get(msg.getMessageId(), temp, msg.getParams());
                 outputStr += temp.append("\n");
             }
             if (output.getMessages().size()) {
diff --git a/src/legacy/events/EventHooks.cpp b/src/legacy/events/EventHooks.cpp
index 47a1cbe1..f17ac2ef 100644
--- a/src/legacy/events/EventHooks.cpp
+++ b/src/legacy/events/EventHooks.cpp
@@ -69,17 +69,18 @@ LL_TYPE_INSTANCE_HOOK(
     void,
     Player&         player,
     BlockPos const& blockPos,
+    Block const&    block,
     uchar           unk_char
 ) {
     IF_LISTENED(EVENT_TYPES::onStartDestroyBlock) {
         CallEventVoid(
             EVENT_TYPES::onStartDestroyBlock,
             PlayerClass::newPlayer(&player),
-            BlockClass::newBlock(blockPos, player.getDimensionId())
+            BlockClass::newBlock(&block, &blockPos, player.getDimensionId())
         );
     }
     IF_LISTENED_END(EVENT_TYPES::onStartDestroyBlock)
-    origin(player, blockPos, unk_char);
+    origin(player, blockPos, block, unk_char);
 }
 
 LL_TYPE_INSTANCE_HOOK(
diff --git a/src/legacy/legacyapi/command/DynamicCommand.cpp b/src/legacy/legacyapi/command/DynamicCommand.cpp
index 89954972..a2ff2b7a 100644
--- a/src/legacy/legacyapi/command/DynamicCommand.cpp
+++ b/src/legacy/legacyapi/command/DynamicCommand.cpp
@@ -688,7 +688,7 @@ DynamicCommandInstance::DynamicCommandInstance(
   description_(std::make_unique<std::string>(description)),
   permission_(permission),
   flag_(flag),
-  builder(std::make_unique<ll::memory::NativeClosure<std::unique_ptr<Command>>>(commandBuilder, (uintptr_t)this)) {}
+  builder(std::make_unique<ll::memory::NativeClosure<std::unique_ptr<Command>()>>(commandBuilder, (uintptr_t)this)) {}
 
 DynamicCommandInstance::~DynamicCommandInstance() = default;
 
diff --git a/src/legacy/legacyapi/command/DynamicCommand.h b/src/legacy/legacyapi/command/DynamicCommand.h
index e2b0550b..c6e17d07 100644
--- a/src/legacy/legacyapi/command/DynamicCommand.h
+++ b/src/legacy/legacyapi/command/DynamicCommand.h
@@ -3,6 +3,7 @@
 #include "fmt/core.h"
 #include "ll/api/base/Concepts.h"
 #include "ll/api/base/Macro.h"
+#include "ll/api/memory/Closure.h"
 #include "ll/api/memory/Memory.h"
 #include "ll/api/service/Bedrock.h"
 #include "magic_enum.hpp"
@@ -43,11 +44,6 @@
 #include <utility>
 #include <vector>
 
-namespace ll::memory {
-template <class Ret, class... Args>
-class NativeClosure;
-}
-
 class Actor;
 class DynamicCommandInstance;
 
@@ -600,7 +596,7 @@ class DynamicCommandInstance {
     CommandFlag                  flag_;
 
 public:
-    std::unique_ptr<ll::memory::NativeClosure<std::unique_ptr<Command>>> builder;
+    std::unique_ptr<ll::memory::NativeClosure<std::unique_ptr<Command>()>> builder;
     // Parameter Pointers to DynamicCommand Extra Part
     size_t                                                        commandSize   = sizeof(DynamicCommand);
     std::unordered_map<std::string, DynamicCommand::ParameterPtr> parameterPtrs = {};
diff --git a/src/lse/PluginMigration.cpp b/src/lse/PluginMigration.cpp
index cd44abe6..3c6f2c2f 100644
--- a/src/lse/PluginMigration.cpp
+++ b/src/lse/PluginMigration.cpp
@@ -2,6 +2,7 @@
 
 #include "Entry.h"
 #include "legacyapi/utils/FileHelper.h"
+#include "ll/api/Expected.h"
 
 #include <filesystem>
 #include <fmt/format.h>
@@ -99,7 +100,7 @@ auto migratePlugin(const PluginManager& pluginManager, const std::filesystem::pa
     std::filesystem::remove(path);
 #endif
 
-    auto manifestJson = ll::reflection::serialize<nlohmann::ordered_json>(manifest);
+    auto manifestJson = ll::reflection::serialize<nlohmann::ordered_json>(manifest).value();
 
     std::ofstream manifestFile{pluginDir / "manifest.json"};
     manifestFile << manifestJson.dump(4);