samples/zephyr make error

[Jeepgoing]

hello,when i make zephyr hello-world use "make hello1",an error appeared,who can help me:

Traceback (most recent call last):
File "../../scripts/imgtool.py", line 145, in
args()
File "../../scripts/imgtool.py", line 142, in args
subcmdsargs.subcmd
File "../../scripts/imgtool.py", line 85, in do_sign
img.sign(key)
File "/home/liang/work/shared/mcuboot-1.1.0/scripts/imgtool/image.py", line 128, in sign
sig = key.sign(bytes(self.payload))
File "/home/liang/work/shared/mcuboot-1.1.0/scripts/imgtool/keys/rsa.py", line 92, in sign
return self.key.sign(
AttributeError: '_RSAPrivateKey' object has no attribute 'sign'

[Jeepgoing]

i have installed scripts/requirements.txt with sudo and without sudo

[Jeepgoing]

i have uninstall cryptography,and reinstall cryptography,this problem was solved.
i think when i first install cryptography,maybe i used sudo.

[OPetryshyn]

Actually cryptography package was not installed.

pip3 install cryptography

No "sudo" required.

[d3zd3z]

Generally, should be

pip3 install -u cryptography

Depending on your distribution. In general, you should never use sudo on a pip command.