django 用 pyinstaller 打包之后运行产生僵尸进程

一个 django web 的项目，用 pyinstaller 打包之后，运行起来就会产生僵尸进程，请各位大佬指点一下原因。

root 3729 22704 0 16:48 pts/11 00:00:00 ./manage runserver 0.0.0.0:8000 root 3730 3729 4 16:48 pts/11 00:00:00 ./manage runserver 0.0.0.0:8000 root 3731 3730 0 16:48 pts/11 00:00:00 /opt/safetyplatform/sensitivex86-1.0/sens_app/manage runserver 0.0.0.0:8000 root 3732 3731 30 16:48 pts/11 00:00:03 /opt/safetyplatform/sensitivex86-1.0/sens_app/manage runserver 0.0.0.0:8000 root 3736 3732 0 16:48 pts/11 00:00:00 [manage] <defunct> root 3800 3623 0 16:48 pts/6 00:00:00 grep --color=auto manage