Issue while trying to create an application resource

[juliopovedacs]

Hello.

I am following the Quick Start tutorial: https://www.openmtc.org/doc.html

After cloning the repository, building the gateway image, and running it, I am facing issues. When I try to create an application resource (by running the corresponding command that appears in the Quick Start tutorial), the following message appears on my terminal window:

"Failed to connect to localhost port 8000: Connection refused".

I opened Docker Desktop's dashboard to check the gateway container log, and I found the following:

Can someone help me please?

Thank you.

[mKay00]

I have a related issue. I am trying to run the minimal application from https://fiware-openmtc.readthedocs.io/en/latest/sdk-framework/index.html and when I run it, I get the same ImportError of 'Accept' as you in the same file.

Traceback (most recent call last):
  File "client.py", line 1, in <module>
    from openmtc_app.onem2m import XAE
  File "/usr/local/lib/python3.5/dist-packages/openmtc_app/onem2m.py", line 28, in <module>
    from openmtc_app.notification import NotificationManager
  File "/usr/local/lib/python3.5/dist-packages/openmtc_app/notification/__init__.py", line 11, in <module>
    from openmtc_onem2m.serializer import get_onem2m_decoder
  File "/usr/local/lib/python3.5/dist-packages/openmtc_onem2m/serializer/__init__.py", line 3, in <module>
    from werkzeug import Accept, parse_accept_header
ImportError: cannot import name 'Accept'

My guess is that there is a version incompatibility, but I am not sure. I am going to try different versions tomorrow, maybe I find a working one.
Currently, I am using:

• Python 3.5.3
• werkzeug 1.0.0
• openMTC latest master

[CodeOne91]

I solved the same problem using werkzeug 0.16.
Worked for me.

[juliopovedacs]

Hello.

Thanks @mKay00 and @CodeOne91 for your comments.

@CodeOne91 how can I downgrade werkzeug please? I execute pip3 freeze in my terminal window and werkzeug does not even appear.

Thank you for your help.

[juliopovedacs]

I found there is a dependencies.txt file inside openmtc-gevent, and it has the following line: werkzeug>=0.9.

So, I changed it to werkzeug==0.16, saved the file, deleted the previous gateway image I had built and created a new gateway image (with the ./create-binary-docker gateway command).

However, I still get the "Failed to connect to localhost port 8000: Connection refused" when I try to create an application resource.

I checked my terminal window and my change to the werkzeug version was ignored.

Can someone help me please?

Thank you.

[juliopovedacs]

Hello.

I was able to downgrade werkzeug to version 0.16 as @CodeOne91 said by editing the following files:

1. openmtc-gevent/dependencies.txt
   Changed line 9: werkzeug==0.16
2. setup-sdk.py
   Changed line 21: "urllib3", "gevent (>=1.0)", "iso8601 (>=0.1.5)", "werkzeug (==0.16)",
   Changed line 26: "urllib3", "gevent >= 1.0", "iso8601 >= 0.1.5", "werkzeug == 0.16",
3. setup-gevent-all.py
   Changed line 27: "urllib3", "gevent (>=1.0)", "iso8601 (>=0.1.5)", "werkzeug (==0.16)",
   Changed line 35: "urllib3", "gevent >= 1.0", "iso8601 >= 0.1.5", "werkzeug == 0.16",

With these changes, deleting previous built gateway image and building a new gateway image, OpenMTC works again.

[CodeOne91]

@japoveda10 sorry for being late. You can try this command in future:
sudo -H pip3 install Werkzeug==0.16.0
python version 3.5

[juliopovedacs]

No worries. Thank you @CodeOne91!