diff --git a/src/include/logger.hpp b/src/include/logger.hpp
index cc5a3ab..12bff01 100644
--- a/src/include/logger.hpp
+++ b/src/include/logger.hpp
@@ -17,8 +17,17 @@ class Logger
 {
 public:
     Logger():
-        is_running_(true)
+        is_running_(false) {}
+
+    ~Logger()
     {
+        if (is_running_)
+            join();
+    }
+
+    void start()
+    {
+        is_running_ = true;
         thread_ = std::thread([&]() {
             while (true)
             {
@@ -36,34 +45,28 @@ public:
         });
     }
 
-    ~Logger()
-    {
-        if (is_running_)
-            join();
-    }
-
     template<typename... Args>
-    void cerr(Args... args)
+    void cerr(Args&&... args)
     {
         std::unique_lock<std::mutex> lock(mutex_);
         msg_queue_.push(std::bind([](auto... args) {
             std::cerr << generateTimeFormatString();
             ((std::cerr << args), ...);
             std::cerr << std::endl;
-            }, std::move(args)...));
+            }, std::forward<Args>(args)...));
         lock.unlock();
         cv_.notify_all();
     }
 
     template<typename... Args>
-    void cout(Args... args)
+    void cout(Args&&... args)
     {
         std::unique_lock<std::mutex> lock(mutex_);
         msg_queue_.push(std::bind([](auto... args) {
             std::cout << generateTimeFormatString();
             ((std::cout << args), ...);
             std::cout << std::endl;
-            }, std::move(args)...));
+            }, std::forward<Args>(args)...));
         lock.unlock();
         cv_.notify_all();
     }
diff --git a/src/include/thread_pool.hpp b/src/include/thread_pool.hpp
index 8565383..4bf030c 100644
--- a/src/include/thread_pool.hpp
+++ b/src/include/thread_pool.hpp
@@ -16,8 +16,17 @@ class ThreadPool
 public:
     ThreadPool():
         thread_num_(std::thread::hardware_concurrency() * 2),
-        is_running_(true)
+        is_running_(false) {}
+
+    ~ThreadPool() noexcept
     {
+        if (is_running_)
+            join();
+    }
+
+    void start()
+    {
+        is_running_ = true;
         work_threads_ = std::make_unique<std::thread[]>(thread_num_);
         for (unsigned int i = 0; i < thread_num_; ++i)
         {
@@ -40,12 +49,6 @@ public:
         }
     }
 
-    ~ThreadPool() noexcept
-    {
-        if (is_running_)
-            join();
-    }
-
     template<class Func, class... Args>
     void submit(Func&& func, Args&&... args)
     {
diff --git a/src/main.cpp b/src/main.cpp
index 8598fa9..0c06c71 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -45,7 +45,7 @@ void processFileTask(fs::path filePath, fs::path outputFolder)
     }
     catch (const std::invalid_argument &e)
     {
-        logger.cerr(BOLDRED, "[Exception] ", RESET, RED, e.what(), RESET, " '", filePath.u8string(), "'");
+        logger.cerr(BOLDRED, "[Exception] ", RESET, RED, std::string(e.what()), RESET, " '", filePath.u8string(), "'");
     }
     catch (...)
     {
@@ -198,6 +198,8 @@ int main(int argc, char **argv)
                 }
             }
         }
+        logger.start();
+        thread_pool.start();
         if (thread_pool.joinable())
             thread_pool.join();
         if (logger.joinable())
@@ -226,6 +228,8 @@ int main(int argc, char **argv)
                 processFile(filePathU8, "");
             }
         }
+        logger.start();
+        thread_pool.start();
         if (thread_pool.joinable())
             thread_pool.join();
         if (logger.joinable())