TypeError TypeError: argument of type 'NoneType' is not iterable

[glupav]

Repo: https://github.com/glupav/aws-bootcamp-cruddur-2023

Week 1 — App Containerization

1 Save Dockerfile in backend

FROM python:3.10-slim-buster

WORKDIR /backend-flask

COPY requirements.txt requirements.txt
RUN pip3 install -r requirements.txt

COPY . .

ENV FLASK_ENV=development

EXPOSE ${PORT}
CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0", "--port=4567"]

2 Set Environment Variables

export FRONTEND_URL="*"
export BACKEND_URL="*"

2 Run commands

cd backend-flask
pip3 install -r requirements.txt

3 Run command

python3 -m flask run --host=0.0.0.0 --port=4567

4 Do following steps:

1. make sure to unlock the port on the port tab
2. open the link for 4567 in your browser
3. append to the url to /api/activities/home
4. you should get back json

5 Run following command

cd ..

6 Unset Variables

unset FRONTEND_URL
unset BACKEND_URL

7 Build Container

docker build -t backend-flask ./backend-flask

8 Set Environment Variables

export FRONTEND_URL="*"
export BACKEND_URL="*"

9 Run Docker

docker run --rm -p 4567:4567 -it backend-flask

@ Problems:

No source image provided with `FROM` dockerfile-utils(20) [Ln 1,Col 1]

@ Output:

Error: the task 'Containers: Logs: musing_newton' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker logs --tail 1000 -f 6c7f8ae90598a9b566f81d8bd616e7ba9e5dd8f8261922d2c4f29b7106171965,",
    "idRandomizer": 0.6610689495048725,
    "problemMatcher": [],
    "label": "Containers: Logs: musing_newton"
}
Error: the task 'Containers: Logs: musing_newton' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker logs --tail 1000 -f 6c7f8ae90598a9b566f81d8bd616e7ba9e5dd8f8261922d2c4f29b7106171965,",
    "idRandomizer": 0.6610689495048725,
    "problemMatcher": [],
    "label": "Containers: Logs: musing_newton"
}
Error: the task 'Containers: Shell: musing_newton' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker exec -it 6c7f8ae90598a9b566f81d8bd616e7ba9e5dd8f8261922d2c4f29b7106171965 bash,",
    "idRandomizer": 0.2210982915494153,
    "problemMatcher": [],
    "label": "Containers: Shell: musing_newton"
}
Error: the task 'Containers: Shell: musing_newton' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker exec -it 6c7f8ae90598a9b566f81d8bd616e7ba9e5dd8f8261922d2c4f29b7106171965 bash,",
    "idRandomizer": 0.2210982915494153,
    "problemMatcher": [],
    "label": "Containers: Shell: musing_newton"
}
Error: the task 'Containers: Logs: suspicious_stonebraker' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker logs --tail 1000 -f dc9f06529d99e522779de5a0e6ccdb341c610a439cb5172632314d7e370aa2d0,",
    "idRandomizer": 0.26725856464732733,
    "problemMatcher": [],
    "label": "Containers: Logs: suspicious_stonebraker"
}
Error: the task 'Containers: Logs: suspicious_stonebraker' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker logs --tail 1000 -f dc9f06529d99e522779de5a0e6ccdb341c610a439cb5172632314d7e370aa2d0,",
    "idRandomizer": 0.26725856464732733,
    "problemMatcher": [],
    "label": "Containers: Logs: suspicious_stonebraker"
}
Error: the task 'Containers: Shell: suspicious_stonebraker' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker exec -it dc9f06529d99e522779de5a0e6ccdb341c610a439cb5172632314d7e370aa2d0 bash,",
    "idRandomizer": 0.18797985321299082,
    "problemMatcher": [],
    "label": "Containers: Shell: suspicious_stonebraker"
}
Error: the task 'Containers: Shell: suspicious_stonebraker' neither specifies a command nor a dependsOn property. The task will be ignored. Its definition is:
{
    "type": "shell",
    "id": "shell,docker exec -it dc9f06529d99e522779de5a0e6ccdb341c610a439cb5172632314d7e370aa2d0 bash,",
    "idRandomizer": 0.18797985321299082,
    "problemMatcher": [],
    "label": "Containers: Shell: suspicious_stonebraker"
}

@ Terminal:
Following two logs are saved from previous Logging

First one popped out from Clipboard:

	"resource": "/workspace/aws-bootcamp-cruddur-2023/frontend-react-js/Dockerfile",
	"owner": "_generated_diagnostic_collection_name_#4",
	"code": "20",
	"severity": 8,
	"message": "No source image provided with `FROM`",
	"source": "dockerfile-utils",
	"startLineNumber": 1,
	"startColumn": 1,
	"endLineNumber": 1,
	"endColumn": 1
}]

Second one copied from Docker Terminal:

* Running on all addresses (0.0.0.0)
 * Running on http://127.0.0.1:4567
 * Running on http://172.17.0.2:4567
Press CTRL+C to quit
 * Restarting with stat
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
 * Debugger is active!
 * Debugger PIN: 708-403-644

@ Logs:

Executing task: docker logs --tail 1000 -f dc9f06529d99e522779de5a0e6ccdb341c610a439cb5172632314d7e370aa2d0 

'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
 * Debug mode: on
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
 * Running on all addresses (0.0.0.0)
 * Running on http://127.0.0.1:4567
 * Running on http://172.17.0.2:4567
Press CTRL+C to quit
 * Restarting with stat
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
 * Debugger is active!
 * Debugger PIN: 708-403-644
192.168.168.71 - - [25/Feb/2023 14:29:34] "GET / HTTP/1.1" 404 -
192.168.168.71 - - [25/Feb/2023 14:29:49] "GET /api/activities/home HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2551, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2531, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2528, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1826, in full_dispatch_request
    return self.finalize_request(rv)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1847, in finalize_request
    response = self.process_response(response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2340, in process_response
    response = self.ensure_sync(func)(response)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 185, in cors_after_request
    set_cors_headers(resp, res_options)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 245, in set_cors_headers
    headers_to_set = get_cors_headers(options, request.headers, request.method)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 177, in get_cors_headers
    origins_to_set = get_cors_origins(options, request_headers.get('Origin'))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in get_cors_origins
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in <listcomp>
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in probably_regex
    return any((c in maybe_regex for c in common_regex_chars))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in <genexpr>
    return any((c in maybe_regex for c in common_regex_chars))
TypeError: argument of type 'NoneType' is not iterable
192.168.168.71 - - [25/Feb/2023 14:29:50] "GET /api/activities/home HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2551, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2531, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2528, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1826, in full_dispatch_request
    return self.finalize_request(rv)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1847, in finalize_request
    response = self.process_response(response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2340, in process_response
    response = self.ensure_sync(func)(response)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 185, in cors_after_request
    set_cors_headers(resp, res_options)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 245, in set_cors_headers
    headers_to_set = get_cors_headers(options, request.headers, request.method)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 177, in get_cors_headers
    origins_to_set = get_cors_origins(options, request_headers.get('Origin'))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in get_cors_origins
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in <listcomp>
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in probably_regex
    return any((c in maybe_regex for c in common_regex_chars))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in <genexpr>
    return any((c in maybe_regex for c in common_regex_chars))
TypeError: argument of type 'NoneType' is not iterable
192.168.168.71 - - [25/Feb/2023 14:29:50] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=style.css HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:29:50] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=debugger.js HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:29:50] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:19] "GET /api/activities/home HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2551, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2531, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2528, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1826, in full_dispatch_request
    return self.finalize_request(rv)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1847, in finalize_request
    response = self.process_response(response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2340, in process_response
    response = self.ensure_sync(func)(response)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 185, in cors_after_request
    set_cors_headers(resp, res_options)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 245, in set_cors_headers
    headers_to_set = get_cors_headers(options, request.headers, request.method)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 177, in get_cors_headers
    origins_to_set = get_cors_origins(options, request_headers.get('Origin'))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in get_cors_origins
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in <listcomp>
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in probably_regex
    return any((c in maybe_regex for c in common_regex_chars))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in <genexpr>
    return any((c in maybe_regex for c in common_regex_chars))
TypeError: argument of type 'NoneType' is not iterable
192.168.168.71 - - [25/Feb/2023 14:33:19] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=style.css HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:19] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=debugger.js HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:19] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:19] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:22] "GET /api/activities/home HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2551, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2531, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2528, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1826, in full_dispatch_request
    return self.finalize_request(rv)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1847, in finalize_request
    response = self.process_response(response)
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2340, in process_response
    response = self.ensure_sync(func)(response)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 185, in cors_after_request
    set_cors_headers(resp, res_options)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 245, in set_cors_headers
    headers_to_set = get_cors_headers(options, request.headers, request.method)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 177, in get_cors_headers
    origins_to_set = get_cors_origins(options, request_headers.get('Origin'))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in get_cors_origins
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in <listcomp>
    return sorted([o for o in origins if not probably_regex(o)])
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in probably_regex
    return any((c in maybe_regex for c in common_regex_chars))
  File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in <genexpr>
    return any((c in maybe_regex for c in common_regex_chars))
TypeError: argument of type 'NoneType' is not iterable
192.168.168.71 - - [25/Feb/2023 14:33:22] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=style.css HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:22] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=debugger.js HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:22] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 304 -
192.168.168.71 - - [25/Feb/2023 14:33:22] "GET /api/activities/home?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 304 -

TypeError
TypeError: argument of type 'NoneType' is not iterable

Traceback (most recent call last)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2551, in call
return self.wsgi_app(environ, start_response)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2531, in wsgi_app
response = self.handle_exception(e)
File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 165, in wrapped_function
return cors_after_request(app.make_response(f(*args, **kwargs)))
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2528, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1826, in full_dispatch_request
return self.finalize_request(rv)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1847, in finalize_request
response = self.process_response(response)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2340, in process_response
response = self.ensure_sync(func)(response)
File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 185, in cors_after_request
set_cors_headers(resp, res_options)
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 245, in set_cors_headers
headers_to_set = get_cors_headers(options, request.headers, request.method)
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 177, in get_cors_headers
origins_to_set = get_cors_origins(options, request_headers.get('Origin'))
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in get_cors_origins
return sorted([o for o in origins if not probably_regex(o)])
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in
return sorted([o for o in origins if not probably_regex(o)])
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in probably_regex
return any((c in maybe_regex for c in common_regex_chars))
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in
return any((c in maybe_regex for c in common_regex_chars))
TypeError: argument of type 'NoneType' is not iterable
The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error.
To switch between the interactive traceback and the plaintext one, you can click on the "Traceback" headline. From the text traceback you can also create a paste of it. For code execution mouse-over the frame you want to debug and click on the console icon on the right side.

You can execute arbitrary Python code in the stack frames and there are some extra helpers available for introspection:

dump() shows all variables in the frame
dump(obj) dumps all that's known about the object

• Running on all addresses (0.0.0.0)
• Running on http://127.0.0.1:4567
• Running on http://172.17.0.2:4567
  Press CTRL+C to quit
• Restarting with stat
  'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
  'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
  'FLASK_ENV' is deprecated and will not be used in Flask 2.3. Use 'FLASK_DEBUG' instead.
• Debugger is active!
• Debugger PIN: 708-403-644

@ Webpage@ .gitpod.io/api/activities/home displays:

TypeError
TypeError: argument of type 'NoneType' is not iterable

Traceback (most recent call last)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2551, in call
return self.wsgi_app(environ, start_response)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2531, in wsgi_app
response = self.handle_exception(e)
File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 165, in wrapped_function
return cors_after_request(app.make_response(f(*args, **kwargs)))
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2528, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1826, in full_dispatch_request
return self.finalize_request(rv)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1847, in finalize_request
response = self.process_response(response)
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2340, in process_response
response = self.ensure_sync(func)(response)
File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 185, in cors_after_request
set_cors_headers(resp, res_options)
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 245, in set_cors_headers
headers_to_set = get_cors_headers(options, request.headers, request.method)
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 177, in get_cors_headers
origins_to_set = get_cors_origins(options, request_headers.get('Origin'))
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in get_cors_origins
return sorted([o for o in origins if not probably_regex(o)])
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 153, in
return sorted([o for o in origins if not probably_regex(o)])
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in probably_regex
return any((c in maybe_regex for c in common_regex_chars))
File "/usr/local/lib/python3.10/site-packages/flask_cors/core.py", line 261, in
return any((c in maybe_regex for c in common_regex_chars))
TypeError: argument of type 'NoneType' is not iterable
The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error.
To switch between the interactive traceback and the plaintext one, you can click on the "Traceback" headline. From the text traceback you can also create a paste of it. For code execution mouse-over the frame you want to debug and click on the console icon on the right side.

You can execute arbitrary Python code in the stack frames and there are some extra helpers available for introspection:

dump() shows all variables in the frame
dump(obj) dumps all that's known about the object

@ Command line error:

docker: Error response from daemon: driver failed programming external connectivity on endpoint laughing_hoover (3e87007cd04eb5d44b6e4a3eb9f138b77e43e507a42fe22fe6095a1ff9902c30): Bind for 0.0.0.0:4567 failed: port is already allocated.

[glupav]

The env variables were not set and not called properly with the docker run command.

Discussion answered by MoroJr#5536 (@discord).