[root@localhost scrapydweb]# scrapydweb [2022-09-01 10:48:12,569] INFO in apscheduler.scheduler: Scheduler started Traceback (most recent call last): File "/usr/local/python38/bin/scrapydweb", line 5, in from scrapydweb.run import main File "/usr/local/python38/lib/python3.8/site-packages/scrapydweb/run.py", line 15, in from scrapydweb.utils.check_app_config import check_app_config File "/usr/local/python38/lib/python3.8/site-packages/scrapydweb/utils/check_app_config.py", line 16, in from .sub_process import init_logparser, init_poll File "/usr/local/python38/lib/python3.8/site-packages/scrapydweb/utils/sub_process.py", line 3, in from ctypes import cdll File "/usr/local/python38/lib/python3.8/ctypes/init.py", line 7, in from _ctypes import Union, Structure, Array ModuleNotFoundError: No module named '_ctypes' [2022-09-01 10:48:12,577] DEBUG in apscheduler: Scheduled tasks: [] [2022-09-01 10:48:12,577] WARNING in apscheduler: Shutting down the scheduler for timer tasks gracefully, wait until all currently executing tasks are finished Error in atexit._run_exitfuncs: Traceback (most recent call last): File "/usr/local/python38/lib/python3.8/site-packages/scrapydweb/utils/scheduler.py", line 111, in atexit.register(lambda: shutdown_scheduler()) File "/usr/local/python38/lib/python3.8/site-packages/scrapydweb/utils/scheduler.py", line 98, in shutdown_scheduler handle_metadata().get('main_pid')) File "/usr/local/python38/lib/python3.8/site-packages/scrapydweb/common.py", line 84, in handle_metadata with db.app.app_context(): AttributeError: 'NoneType' object has no attribute 'app_context'