python скрипт не запускается через автозагрузку

which python | systemd-cat
which pip | systemd-cat
pip --version | systemd-cat

# cat /storage/.config/script.log
Traceback (most recent call last):
  File "/storage/.config/script.py", line 39, in <module>
    fi = open('/tmp/port.txt', "r")              
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/port.txt'

# ls -l /tmp/port.txt 
-rw-r--r--    1 root     root             6 Nov 29 14:14 /tmp/port.txt

pip install cryptography --upgrade

def _verify_package_version(version):
    # Occasionally we run into situations where the version of the Python
    # package does not match the version of the shared object that is loaded.
    # This may occur in environments where multiple versions of cryptography
    # are installed and available in the python path. To avoid errors cropping
    # up later this code checks that the currently imported package and the
    # shared object that were loaded have the same version and raise an
    # ImportError if they do not
    so_package_version = ffi.string(lib.CRYPTOGRAPHY_PACKAGE_VERSION)
    if version.encode("ascii") != so_package_version:
        raise ImportError(
            "The version of cryptography does not match the loaded "
            "shared object. This can happen if you have multiple copies of "
            "cryptography installed in your Python path. Please try creating "
            "a new virtual environment to resolve this issue. "
            "Loaded python version: {}, shared object version: {}".format(
                version, so_package_version
            )
        )

_verify_package_version(cryptography.__version__)

# pip install cryptography --upgrade
Collecting cryptography
  Downloading cryptography-3.2.1-cp35-abi3-manylinux2014_aarch64.whl (2.6 MB)
     |████████████████████████████████| 2.6 MB 60 kB/s 
Requirement already satisfied, skipping upgrade: cffi!=1.11.3,>=1.8 in ./.opt/lib/python3.8/site-packages (from cryptography) (1.14.3)
Requirement already satisfied, skipping upgrade: six>=1.4.1 in ./.opt/lib/python3.8/site-packages (from cryptography) (1.15.0)
Requirement already satisfied, skipping upgrade: pycparser in ./.opt/lib/python3.8/site-packages (from cffi!=1.11.3,>=1.8->cryptography) (2.20)
Installing collected packages: cryptography
  Attempting uninstall: cryptography
    Found existing installation: cryptography 3.1
    Uninstalling cryptography-3.1:
      Successfully uninstalled cryptography-3.1
Successfully installed cryptography-3.2.1

 # cat /storage/.config/script.log
Traceback (most recent call last):
  File "/storage/.config/script.py", line 39, in <module>
    fi = open('/tmp/port.txt', "r")              
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/port.txt'

# ls -l /tmp/port.txt 
-rw-r--r--    1 root     root             6 Nov 29 14:14 /tmp/port.txt

which python | systemd-cat
which pip | systemd-cat
pip --version | systemd-cat

/opt/bin/python3.8 /storage/.config/script.py &> /storage/.config/script.log &

#!/usr/bin/env python3

import pymysql
import sys
import settings
import pymysql
from cryptography.fernet import Fernet
.....................................

import time
import sys

...

while not sys.path.exists(file):
    time.sleep(0.1)

...

# pip install cryptography --upgrade

# cat /storage/.config/script.log

(sleep 20; python3.8 ... ) &

(sleep 20; /opt/bin/python3.8 /storage/.config/script.py > /storage/.config/script.log) &