# Issue importing ER

**URL:** <https://discuss.roboflow.com/t/issue-importing-er/1835>\
**Category:** 🤝  Community Help\
**Tags:** bugs\
**Created:** [April 1, 2023, 11:03pm UTC](https://discuss.roboflow.com/t/issue-importing-er/1835 "2023-04-01T23:03:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![willem\_weertman](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/willem_weertman/32/1351_2.png) [@willem\_weertman](https://discuss.roboflow.com/u/willem_weertman)\
**Post date:** [April 1, 2023, 11:03pm UTC](https://discuss.roboflow.com/t/issue-importing-er/1835/1 "2023-04-01T23:03:22Z")

</div>

I’m attempting to locally train a Yolov8 model using a roboflow hosted model.

Windows 10 Pro

(starseg-lab) C:\Users\wlwee\Downloads\>pip list  
Package Version

* * *

certifi 2022.12.7  
chardet 4.0.0  
charset-normalizer 3.1.0  
colorama 0.4.6  
contourpy 1.0.7  
cycler 0.10.0  
filelock 3.10.7  
fonttools 4.39.3  
idna 2.10  
Jinja2 3.1.2  
kiwisolver 1.4.4  
MarkupSafe 2.1.2  
matplotlib 3.7.1  
mpmath 1.3.0  
networkx 3.0  
numpy 1.24.2  
opencv-python 4.7.0.72  
packaging 23.0  
pandas 1.5.3  
Pillow 9.5.0  
pip 23.0.1  
psutil 5.9.4  
pyparsing 2.4.7  
python-dateutil 2.8.2  
python-dotenv 1.0.0  
pytz 2023.3  
PyYAML 6.0  
requests 2.28.2  
requests-toolbelt 0.10.1  
roboflow 1.0.2  
scipy 1.10.1  
seaborn 0.12.2  
sentry-sdk 1.18.0  
setuptools 65.5.0  
six 1.16.0  
sympy 1.11.1  
thop 0.1.1.post2209072238  
torch 2.0.0  
torchvision 0.15.1  
tqdm 4.65.0  
typing\_extensions 4.5.0  
ultralytics 8.0.59  
urllib3 1.26.15  
wget 3.2

**When I attempt to import roboflow I get the below error.**

> (starseg-lab) C:\Users\wlwee\Downloads\>python  
> Python 3.11.2 (tags/v3.11.2:878ead1, Feb 7 2023, 16:38:35) [MSC v.1934 64 bit (AMD64)] on win32  
> Type “help”, “copyright”, “credits” or “license” for more information.
> 
> > > import roboflow  
> > > Traceback (most recent call last):  
> > > File “”, line 1, in   
> > > File “C:\Users\wlwee\starseg-lab\Lib\site-packages\roboflow\__init_\_.py”, line 10, in   
> > > from roboflow.config import API\_URL, APP\_URL, DEMO\_KEYS, load\_roboflow\_api\_key  
> > > File “C:\Users\wlwee\starseg-lab\Lib\site-packages\roboflow\config.py”, line 44, in   
> > > API\_URL = get\_conditional\_configuration\_variable(“API\_URL”, “[https://api.roboflow.com](https://api.roboflow.com)”)  
> > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
> > > File “C:\Users\wlwee\starseg-lab\Lib\site-packages\roboflow\config.py”, line 20, in get\_conditional\_configuration\_variable  
> > > default=os.getenv(“HOME”) + “/.config/roboflow/config.json”,

```
        ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

```

TypeError: unsupported operand type(s) for +: ‘NoneType’ and ‘str’

---

<div class="post-metadata">

**Author:** ![jackey](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/jackey/32/1432_2.png) [@jackey](https://discuss.roboflow.com/u/jackey)\
**Post date:** [April 6, 2023, 6:19am UTC](https://discuss.roboflow.com/t/issue-importing-er/1835/2 "2023-04-06T06:19:45Z")

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I got the same error