unable to attach to the specified process

[Zeuqi]

Hi,

Device: iPhone 6S;
Jailbreak: checkra1n;
Downloaded: OpenSSH at Cyclia

https://github.com/AloneMonkey/frida-ios-dump -l -> works succesfully
https://github.com/AloneMonkey/frida-ios-dump [package-name] -> doesn't work, turns error:

CryptographyDeprecationWarning: Python 2 is no longer supported by the Python core team. Support for it is now deprecated in cryptography, and will be removed in the next release.
  from cryptography.hazmat.backends import default_backend
Start the target app com.apple.icq
unable to attach to the specified process

goes with every other app.

can anyone help?

ty so much.

[g]

try using python3 and installing "frida for pre-A12 devices"