# Question of installing cert-issuer **URL:** \ **Category:** Technical\ **Created:** [February 15, 2019, 2:52pm UTC](https://community.blockcerts.org/t/question-of-installing-cert-issuer/1707 "2019-02-15T14:52:06Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ntydrm](https://avatars.discourse-cdn.com/v4/letter/n/db5fbb/32.png) [@ntydrm](https://community.blockcerts.org/u/ntydrm)\ **Post date:** [February 15, 2019, 2:52pm UTC](https://community.blockcerts.org/t/question-of-installing-cert-issuer/1707/1 "2019-02-15T14:52:06Z")
Hi, I’m trying to set up enviroment in virtualbox ubuntu14.04 os. I set up python virtual environment and use python 3.5.2 version. when I’m installing cert-issuer, the process report no error or other information.seems to be successful. but when running cert-issuer -c conf.ini, there is error saying no command was found. How to fix the problem. Thanks a lot! The info after running “python setup.py experimental --blockchain=ethereum” is as follows: // (certviewervenv) jack@VUBUNTU1404:~/cert-issuer$ python setup.py experimental --blockchain=ethereum running experimental Requirement already satisfied: cert-core\>=2.1.9 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (2.1.9) Requirement already satisfied: jsonschema\>=2.6.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (2.6.0) Requirement already satisfied: requests\>=2.18.4 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (2.21.0) Requirement already satisfied: python-dateutil\>=2.6.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (2.8.0) Requirement already satisfied: tox\>=3.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (3.7.0) Requirement already satisfied: cert-schema\>=2.1.5 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (2.1.6) Requirement already satisfied: Flask-PyMongo\>=0.5.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (2.2.0) Requirement already satisfied: pytz\>=2017.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (2018.9) Requirement already satisfied: validators\>=0.12.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (0.12.4) Requirement already satisfied: connexion\>=1.1.14 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (2.2.0) Requirement already satisfied: configargparse\>=0.12.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (0.12.0) Requirement already satisfied: simplekv\>=0.10.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-core\>=2.1.9) (0.11.11) Requirement already satisfied: certifi\>=2017.4.17 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-core\>=2.1.9) (2018.11.29) Requirement already satisfied: urllib3\<1.25,\>=1.21.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-core\>=2.1.9) (1.24.1) Requirement already satisfied: idna\<2.9,\>=2.5 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-core\>=2.1.9) (2.8) Requirement already satisfied: chardet\<3.1.0,\>=3.0.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-core\>=2.1.9) (3.0.4) Requirement already satisfied: six\>=1.5 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from python-dateutil\>=2.6.1-\>cert-core\>=2.1.9) (1.12.0) Requirement already satisfied: virtualenv\>=1.11.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-core\>=2.1.9) (16.4.0) Requirement already satisfied: toml\>=0.9.4 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-core\>=2.1.9) (0.10.0) Requirement already satisfied: pluggy\<1,\>=0.3.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-core\>=2.1.9) (0.8.1) Requirement already satisfied: filelock\<4,\>=3.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-core\>=2.1.9) (3.0.10) Requirement already satisfied: setuptools\>=30.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-core\>=2.1.9) (40.8.0) Requirement already satisfied: py\<2,\>=1.4.17 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-core\>=2.1.9) (1.7.0) Requirement already satisfied: pyld\>=1.0.3 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-schema\>=2.1.5-\>cert-core\>=2.1.9) (1.0.4) Requirement already satisfied: PyMongo\>=3.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from Flask-PyMongo\>=0.5.1-\>cert-core\>=2.1.9) (3.7.2) Requirement already satisfied: Flask\>=0.11 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from Flask-PyMongo\>=0.5.1-\>cert-core\>=2.1.9) (1.0.2) Requirement already satisfied: decorator\>=3.4.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from validators\>=0.12.1-\>cert-core\>=2.1.9) (4.3.2) Requirement already satisfied: PyYAML\>=3.13 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from connexion\>=1.1.14-\>cert-core\>=2.1.9) (3.13) Requirement already satisfied: openapi-spec-validator\>=0.2.4 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from connexion\>=1.1.14-\>cert-core\>=2.1.9) (0.2.4) Requirement already satisfied: clickclick\>=1.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from connexion\>=1.1.14-\>cert-core\>=2.1.9) (1.2.2) Requirement already satisfied: typing\>=3.6.1; python\_version \< “3.6” in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from connexion\>=1.1.14-\>cert-core\>=2.1.9) (3.6.6) Requirement already satisfied: inflection\>=0.3.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from connexion\>=1.1.14-\>cert-core\>=2.1.9) (0.3.1) Requirement already satisfied: click\>=5.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from Flask\>=0.11-\>Flask-PyMongo\>=0.5.1-\>cert-core\>=2.1.9) (7.0) Requirement already satisfied: itsdangerous\>=0.24 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from Flask\>=0.11-\>Flask-PyMongo\>=0.5.1-\>cert-core\>=2.1.9) (1.1.0) Requirement already satisfied: Jinja2\>=2.10 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from Flask\>=0.11-\>Flask-PyMongo\>=0.5.1-\>cert-core\>=2.1.9) (2.10) Requirement already satisfied: Werkzeug\>=0.14 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from Flask\>=0.11-\>Flask-PyMongo\>=0.5.1-\>cert-core\>=2.1.9) (0.14.1) Requirement already satisfied: MarkupSafe\>=0.23 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from Jinja2\>=2.10-\>Flask\>=0.11-\>Flask-PyMongo\>=0.5.1-\>cert-core\>=2.1.9) (1.1.0) Requirement already satisfied: cert-schema\>=2.1.5 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (2.1.6) Requirement already satisfied: validators\>=0.12.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-schema\>=2.1.5) (0.12.4) Requirement already satisfied: jsonschema\>=2.6.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-schema\>=2.1.5) (2.6.0) Requirement already satisfied: pyld\>=1.0.3 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-schema\>=2.1.5) (1.0.4) Requirement already satisfied: requests\>=2.18.4 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-schema\>=2.1.5) (2.21.0) Requirement already satisfied: tox\>=3.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cert-schema\>=2.1.5) (3.7.0) Requirement already satisfied: six\>=1.4.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from validators\>=0.12.1-\>cert-schema\>=2.1.5) (1.12.0) Requirement already satisfied: decorator\>=3.4.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from validators\>=0.12.1-\>cert-schema\>=2.1.5) (4.3.2) Requirement already satisfied: certifi\>=2017.4.17 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-schema\>=2.1.5) (2018.11.29) Requirement already satisfied: chardet\<3.1.0,\>=3.0.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-schema\>=2.1.5) (3.0.4) Requirement already satisfied: urllib3\<1.25,\>=1.21.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-schema\>=2.1.5) (1.24.1) Requirement already satisfied: idna\<2.9,\>=2.5 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests\>=2.18.4-\>cert-schema\>=2.1.5) (2.8) Requirement already satisfied: py\<2,\>=1.4.17 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-schema\>=2.1.5) (1.7.0) Requirement already satisfied: virtualenv\>=1.11.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-schema\>=2.1.5) (16.4.0) Requirement already satisfied: toml\>=0.9.4 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-schema\>=2.1.5) (0.10.0) Requirement already satisfied: filelock\<4,\>=3.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-schema\>=2.1.5) (3.0.10) Requirement already satisfied: setuptools\>=30.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-schema\>=2.1.5) (40.8.0) Requirement already satisfied: pluggy\<1,\>=0.3.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0-\>cert-schema\>=2.1.5) (0.8.1) Requirement already satisfied: chainpoint\>=0.0.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (0.0.2) Requirement already satisfied: merkletools==1.0.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from chainpoint\>=0.0.2) (1.0.2) Requirement already satisfied: pysha3\>=1.0b1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from merkletools==1.0.2-\>chainpoint\>=0.0.2) (1.0.2) Requirement already satisfied: configargparse\>=0.12.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (0.12.0) Requirement already satisfied: glob2==0.6 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (0.6) Requirement already satisfied: mock==2.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (2.0.0) Requirement already satisfied: six\>=1.9 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from mock==2.0.0) (1.12.0) Requirement already satisfied: pbr\>=0.11 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from mock==2.0.0) (5.1.2) Requirement already satisfied: requests[security]\>=2.18.4 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (2.21.0) Requirement already satisfied: idna\<2.9,\>=2.5 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests[security]\>=2.18.4) (2.8) Requirement already satisfied: urllib3\<1.25,\>=1.21.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests[security]\>=2.18.4) (1.24.1) Requirement already satisfied: certifi\>=2017.4.17 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests[security]\>=2.18.4) (2018.11.29) Requirement already satisfied: chardet\<3.1.0,\>=3.0.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests[security]\>=2.18.4) (3.0.4) Requirement already satisfied: pyOpenSSL\>=0.14; extra == “security” in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests[security]\>=2.18.4) (17.5.0) Requirement already satisfied: cryptography\>=1.3.4; extra == “security” in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from requests[security]\>=2.18.4) (2.5) Requirement already satisfied: six\>=1.5.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from pyOpenSSL\>=0.14; extra == “security”-\>requests[security]\>=2.18.4) (1.12.0) Requirement already satisfied: asn1crypto\>=0.21.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cryptography\>=1.3.4; extra == “security”-\>requests[security]\>=2.18.4) (0.24.0) Requirement already satisfied: cffi!=1.11.3,\>=1.8 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cryptography\>=1.3.4; extra == “security”-\>requests[security]\>=2.18.4) (1.12.0) Requirement already satisfied: pycparser in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cffi!=1.11.3,\>=1.8-\>cryptography\>=1.3.4; extra == “security”-\>requests[security]\>=2.18.4) (2.19) Requirement already satisfied: pycoin\>=0.80 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (0.80) Requirement already satisfied: pyld\>=1.0.3 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (1.0.4) Requirement already satisfied: pysha3\>=1.0.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (1.0.2) Requirement already satisfied: python-bitcoinlib\>=0.10.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (0.10.1) Requirement already satisfied: tox\>=3.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (3.7.0) Requirement already satisfied: setuptools\>=30.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0) (40.8.0) Requirement already satisfied: filelock\<4,\>=3.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0) (3.0.10) Requirement already satisfied: toml\>=0.9.4 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0) (0.10.0) Requirement already satisfied: pluggy\<1,\>=0.3.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0) (0.8.1) Requirement already satisfied: virtualenv\>=1.11.2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0) (16.4.0) Requirement already satisfied: py\<2,\>=1.4.17 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0) (1.7.0) Requirement already satisfied: six\<2,\>=1.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from tox\>=3.0.0) (1.12.0) Requirement already satisfied: coincurve==7.1.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (7.1.0) Requirement already satisfied: asn1crypto in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from coincurve==7.1.0) (0.24.0) Requirement already satisfied: cffi\>=1.3.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from coincurve==7.1.0) (1.12.0) Requirement already satisfied: pycparser in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cffi\>=1.3.0-\>coincurve==7.1.0) (2.19) Requirement already satisfied: ethereum==2.3.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (2.3.1) Requirement already satisfied: pyethash in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (0.1.27) Requirement already satisfied: rlp\>=0.4.7 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (0.6.0) Requirement already satisfied: pysha3\>=1.0.1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (1.0.2) Requirement already satisfied: PyYAML in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (3.13) Requirement already satisfied: coincurve\>=7.0.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (7.1.0) Requirement already satisfied: future in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (0.17.1) Requirement already satisfied: pbkdf2 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (1.3) Requirement already satisfied: repoze.lru in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (0.7) Requirement already satisfied: pycryptodome\>=3.4.7 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (3.7.3) Requirement already satisfied: py-ecc in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (1.4.7) Requirement already satisfied: scrypt in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from ethereum==2.3.1) (0.8.13) Requirement already satisfied: asn1crypto in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from coincurve\>=7.0.0-\>ethereum==2.3.1) (0.24.0) Requirement already satisfied: cffi\>=1.3.0 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from coincurve\>=7.0.0-\>ethereum==2.3.1) (1.12.0) Requirement already satisfied: pycparser in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (from cffi\>=1.3.0-\>coincurve\>=7.0.0-\>ethereum==2.3.1) (2.19) Requirement already satisfied: rlp\<1 in /home/jack/cvenv/certviewervenv/lib/python3.5/site-packages (0.6.0) (certviewervenv) jack@VUBUNTU1404:~/cert-issuer$ ls ---
**Author:** ![yoman](https://avatars.discourse-cdn.com/v4/letter/y/7bcc69/32.png) [@yoman](https://community.blockcerts.org/u/yoman)\ **Post date:** [February 15, 2019, 8:27pm UTC](https://community.blockcerts.org/t/question-of-installing-cert-issuer/1707/2 "2019-02-15T20:27:04Z")
That is because you need to install the cert-issuer command. While at cert-issuer’s path run `pip3 install .` and **then** run `cert-issuer -c conf.ini` it should be working.