using grpc along with gramine

[lili]

I have implemented an application using gRPC, now I want to execute my gRPC inside sgx using Gramine , after running make SGX=1 and gramine-sgx ./python app.py" I get error:
PermissionError: [Errno 13] Permission denied: '/usr/local/lib/python3.8/dist-packages/grpc/__init__.py'

even with a simple hello.py :

#!/usr/bin/env python3

import mysql.connector

print("Hello World")

I get the sam error:

Gramine is starting. Parsing TOML manifest file, this may take some time...
-----------------------------------------------------------------------------------------------------------------------
Gramine detected the following insecure configurations:

  - sgx.debug = true                           (this is a debug enclave)
  - loader.insecure__use_cmdline_argv = true   (forwarding command-line args from untrusted host to the app)
  - sgx.allowed_files = [ ... ]                (some files are passed through from untrusted host without verification)

Gramine will continue application execution, but this configuration must not be used in production!
-----------------------------------------------------------------------------------------------------------------------

Traceback (most recent call last):
  File "hello.py", line 2, in <module>
    import grpc
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 844, in exec_module
  File "<frozen importlib._bootstrap_external>", line 980, in get_code
  File "<frozen importlib._bootstrap_external>", line 1037, in get_data
PermissionError: [Errno 13] Permission denied: '/usr/local/lib/python3.8/dist-packages/grpc/__init__.py'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 72, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
    from apport.report import Report
  File "/usr/lib/python3/dist-packages/apport/report.py", line 32, in <module>
    import apport.fileutils
  File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 27, in <module>
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 23, in <module>
    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 36, in <module>
    apt_pkg.init_system()
apt_pkg.Error: E:Error reading the CPU table

Original exception was:
Traceback (most recent call last):
  File "hello.py", line 2, in <module>
    import grpc
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 844, in exec_module
  File "<frozen importlib._bootstrap_external>", line 980, in get_code
  File "<frozen importlib._bootstrap_external>", line 1037, in get_data
PermissionError: [Errno 13] Permission denied: '/usr/local/lib/python3.8/dist-packages/grpc/__init__.py'