diff --git a/automation_editor/extend/process_executor/task_process_manager.py b/automation_editor/extend/process_executor/task_process_manager.py
index c434838..4ff6ba4 100644
--- a/automation_editor/extend/process_executor/task_process_manager.py
+++ b/automation_editor/extend/process_executor/task_process_manager.py
@@ -1,6 +1,4 @@
-import os
 import queue
-import shutil
 import subprocess
 import sys
 import threading
@@ -14,8 +12,6 @@
 from je_editor.utils.venv_check.check_venv import check_and_choose_venv
 
 from automation_editor.automation_editor_ui.show_code_window.code_window import CodeWindow
-from automation_editor.utils.exception.exception_tags import compiler_not_found_error
-from automation_editor.utils.exception.exceptions import ITEExecException
 
 
 class TaskProcessManager(object):
@@ -24,7 +20,7 @@ def __init__(
             main_window: CodeWindow,
             task_done_trigger_function: typing.Callable = None,
             error_trigger_function: typing.Callable = None,
-            program_buffer_size: int = 1024000,
+            program_buffer_size: int = 1024,
             program_encoding: str = "utf-8"
     ):
         super().__init__()
@@ -57,7 +53,7 @@ def renew_path(self) -> None:
 
     def start_test_process(self, package: str, exec_str: str):
         self.renew_path()
-        self.process = subprocess.Popen(
+        self.process: subprocess.Popen = subprocess.Popen(
             [
                 self.compiler_path,
                 "-m",
@@ -144,13 +140,14 @@ def print_and_clear_queue(self):
 
     def read_program_output_from_process(self):
         while self.still_run_program:
-            program_output_data = self.process.stdout.raw.read(self.program_buffer_size).decode(self.program_encoding)
+            self.process: subprocess.Popen
+            program_output_data = self.process.stdout.read(self.program_buffer_size).decode(self.program_encoding)
             if program_output_data.strip() != "":
                 self.run_output_queue.put(program_output_data)
 
     def read_program_error_output_from_process(self):
         while self.still_run_program:
-            program_error_output_data = self.process.stderr.raw.read(self.program_buffer_size).decode(
+            program_error_output_data = self.process.stderr.read(self.program_buffer_size).decode(
                 self.program_encoding)
             if program_error_output_data.strip() != "":
                 self.run_error_queue.put(program_error_output_data)